|                      | **United                States Securities and Exchange Commission**         |
|---------------------------|-----------------------------------------------------------------------------|
|                      |                                                                        |
|                      | **Washington,                D.C. 20549**                                   |
|                      |                                                                        |
|                      | **Form                10-QSB**                                              |
|                      |                                                                        |
| (Mark                One) |                                                                        |
|                      |                                                                        |
| **R**                     | **QUARTERLY                REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE** |
|                      | **SECURITIES                EXCHANGE ACT OF 1934**                          |
|                      | For                the quarterly period ended March 31, 2006                |
|                      |                                                                        |
| o                         | **TRANSITION                REPORT UNDER SECTION 13 OR 15 (d) OF THE**      |
|                      | **SECURITIES                EXCHANGE ACT OF 1934**                          |
|                      |                                                                        |
|                      | For                the transition period from _____ to _____                |
|                      |                                                                        |
|                      |                                                                        |
|                      |                                                                        |
|                      |                                                                        |
|                      | **ATLAS                AMERICA SERIES #25-2004 (A) L.P.**                   |
|                      | (Name                of small business issuer in its charter)               |
|                      |                                                                        |

|                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                              |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------|
|                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                              |
| **Delaware**                                                                                                                                                                                                                                                                                                                                                                                                                     | **55-0856393**                                                    |
| (State                or other jurisdiction ofincorporation                or organization)                                                                                                                                                                                                                                                                                                                                      | (I.R.S.                EmployerIdentification                No.) |
|                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                              |
| 311                Rouser Road                                                                                                                                                                                                                                                                                                                                                                                                   | 15108                                                             |
| Moon                Township, PA                                                                                                                                                                                                                                                                                                                                                                                                 | (zip                code)                                         |
| (Address                of principal executive offices)                                                                                                                                                                                                                                                                                                                                                                          |                                                              |
|                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                              |
| Issuer’s                telephone number, including area code: **(412)                262-2830**                                                                                                                                                                                                                                                                                                                           |
|                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Check whether the issuer (1) filed all reports                required                to be filed by Section 13 or 15 (d) of the Exchange Act during the                past 12                months (or for such shorter period that the registrant                was                required to file such reports), and (2) has been subject to such                filing                requirements for the past 90 days. |
| Yes** ****R**              No o                                                                                                                                                                                                                                                                                                                                                                                             |
|                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Indicate              by check mark whether the registrant is an accelerated filer (as defined              in Rule 12b-2 of the Exchange              Act). Yes o              No** ****R**                                                                                                                                                                                                                                |
|                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Indicate              by              check mark whether the registrant is a shell company (as defined in              Rule              12b-2 of the Exchange Act).  Yes              o              No              **R**                                                                                                                                                                                                 |
|                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Transitional                  Small Business Disclosure Format (check one): Yes o                  No                  **R**                                                                                                                                                                                                                                                                                                     |
|                                                                                                                                                                                                                                                                                                                                                                                                                             |
|                                                                                                                                                                                                                                                                                                                                                                                                                                  |

----

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**INDEX      TO QUARTERLY REPORT**

**ON      FORM 10QSB**

|                        |                                                                                                                                    | **PAGE** |
|-----------------------------|-----------------------------------------------------------------------------------------------------------------------------------------|----------|
| **PART                I.**  | **FINANCIAL                INFORMATION**                                                                                                |     |
|                        |                                                                                                                                    |     |
| Item                1.      | Financial                Statements                                                                                                     |     |
|                        |                                                                                                                                    |     |
|                        | Balance                Sheets as of March 31, 2006 and December 31, 2005                (Unaudited)                                     | 3        |
|                        |                                                                                                                                    |     |
|                        | Statement                of Operations for the Three Months ended March 31, 2006 and 2005                (Unaudited)                    | 4        |
|                        |                                                                                                                                    |     |
|                        | Statement                of Partners’ Capital Accounts for the Three Months ended March 31, 2006                (Unaudited)  | 5        |
|                        |                                                                                                                                    |     |
|                        | Statement                of Cash Flows for the Three Months ended March 31, 2006 and 2005                (Unaudited)                    | 6        |
|                        |                                                                                                                                    |     |
|                        | Notes                to Financial Statements (Unaudited)                                                                                | 7-12     |
|                        |                                                                                                                                    |     |
| Item                2.      | Management’s                Discussion and Analysis of Financial Condition or Plan of                Operations                   | 13-16    |
|                        |                                                                                                                                    |     |
| Item                3.      | Controls                and Procedures                                                                                                  | 16       |
|                        |                                                                                                                                    |     |
| **PART                II.** | **OTHER                INFORMATION**                                                                                                    |     |
|                        |                                                                                                                                    |     |
| Item                6.      | Exhibits                                                                                                                                | 16       |
|                        |                                                                                                                                    |     |
|                        |                                                                                                                                    |     |
| **SIGNATURES**              | 17                                                                                                                                      |
|                        |                                                                                                                                    |
| **CERTIFICATIONS**          | 18-21                                                                                                                                   |

----

**PART      I**

**ITEM      1. FINANCIAL STATEMENTS**

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**BALANCE      SHEETS**

|                                                        |   | **March                31,** |       | **December                31,** |   |
|-------------------------------------------------------------|--------|------------------------------|------------|---------------------------------|--------|
|                                                        |   | **2006**                     |       | **2005**                        |   |
|                                                        |   | (Unaudited)                  |       | (Audited)                       |   |
| **ASSETS:**                                                 |   |                         |       |                            |   |   |   |
| Current                Assets:                              |   |                         |       |                            |   |   |   |
| Cash                and cash equivalents                    |   | $                            | 1,039,900  |                            | $      | 2,300 |   |
| Accounts                receivable - affiliate              |   |                         | 3,138,100  |                            |   | 4,846,900 |   |
| Hedge                receivable short-term                  |   |                         | 513,300    |                            |   | 182,500 |   |
| Total                current assets                         |   |                         | 4,691,300  |                            |   | 5,031,700 |   |
|                                                        |   |                         |       |                            |   |   |   |
| Oil                and gas properties (successful efforts)  |   |                         | 36,526,200 |                            |   | 36,525,100 |   |
| Less                accumulated depletion                   |   |                         | (7,533,000 | )                               |   | (6,507,100 | ) |
|                                                        |   |                         | 28,993,200 |                            |   | 30,018,000 |   |
|                                                        |   |                         |       |                            |   |   |   |
| Hedge                receivable long-term                   |   |                         | 289,800    |                            |   | ― |   |
|                                                        |   | $                            | 33,974,300 |                            | $      | 35,049,700 |   |
|                                                        |   |                         |       |                            |   |   |   |
|                                                        |   |                         |       |                            |   |   |   |
| **LIABILITIES                AND PARTNERS’ CAPITAL:** |   |                         |       |                            |   |   |   |
| Current                liabilities:                         |   |                         |       |                            |   |   |   |
| Accrued                liabilities                          |   | $                            | 22,300     |                            |   | 22,500 |   |
| Hedge                liability short-term                   |   |                         | ―    |                            |   | 17,800 |   |
| Total                current liabilities                    |   |                         | 22,300     |                            | $      | 40,300 |   |
|                                                        |   |                         |       |                            |   |   |   |
| Asset                retirement obligation                  |   |                         | 1,157,500  |                            |   | 1,147,000 |   |
| Hedge                liability long-term                    |   |                         | 933,400    |                            |   | 798,300 |   |
|                                                        |   |                         |       |                            |   |   |   |
|                                                        |   |                         |       |                            |   |   |   |
|                                                        |   |                         |       |                            |   |   |   |
| Partners’                capital:                     |   |                         |       |                            |   |   |   |
| Managing                general partner                     |   |                         | 7,970,400  |                            |   | 8,366,000 |   |
| Limited                partners (1,106.76 units)            |   |                         | 24,021,000 |                            |   | 25,331,800 |   |
| Accumulated                comprehensive loss               |   |                         | (130,300   | )                               |   | (633,700 | ) |
|                                                        |   |                         | 31,861,100 |                            |   | 33,064,100 |   |
|                                                        |   | $                            | 33,974,300 |                            | $      | 35,049,700 |   |

----

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**STATEMENTS      OF OPERATIONS **

**(Unaudited)**

|                                                     |   | **Three                Months** |      | **Three                Months** |   |
|----------------------------------------------------------|--------|---------------------------------|-----------|---------------------------------|--------|
|                                                     |   | **Ended**                       |      | **Ended**                       |   |
|                                                     |   | **March                31,**    |      | **March                31,**    |   |
|                                                     |   | **2006**                        |      | **2005**                        |   |
|                                                     |   |                            |      |                            |   |   |   |
| **REVENUES:**                                            |   |                            |      |                            |   |   |   |
| Natural                gas and oil sales                 |   | $                               | 3,470,000 |                            | $      | 2,354,100 |   |
| Total                revenues                            |   |                            | 3,470,000 |                            |   | 2,354,100 |   |
|                                                     |   |                            |      |                            |   |   |   |
|                                                     |   |                            |      |                            |   |   |   |
| **COST                AND EXPENSES:**                    |   |                            |      |                            |   |   |   |
| Production                expenses                       |   |                            | 406,200   |                            |   | 200,800 |   |
| Depletion                of oil and gas properties       |   |                            | 1,025,900 |                            |   | 1,045,500 |   |
| Accretion                of asset retirement obligation  |   |                            | 10,500    |                            |   | 10,000 |   |
| General                and administrative expenses       |   |                            | 35,900    |                            |   | 27,400 |   |
| Total                expenses                            |   |                            | 1,478,500 |                            |   | 1,283,700 |   |
| **Net                earnings**                          |   | $                               | 1,991,500 |                            | $      | 1,070,400 |   |
|                                                     |   |                            |      |                            |   |   |   |
|                                                     |   |                            |      |                            |   |   |   |
| **Allocation                of net earnings:**           |   |                            |      |                            |   |   |   |
|                                                     |   |                            |      |                            |   |   |   |
| Managing                general partner                  |   | $                               | 899,400   |                            | $      | 503,300 |   |
| Limited                partners                          |   | $                               | 1,092,100 |                            | $      | 567,100 |   |
| Net                earnings per limited partnership unit |   | $                               | 987       |                            | $      | 512 |   |

----

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**STATEMENT      OF PARTNERS’ CAPITAL ACCOUNTS**

**FOR      THE THREE MONTHS ENDED March 31, 2006**

**(Unaudited)**

|                                                    |   | **Managing** |       |         |   | **Accumulated**                  |   |      |     |
|---------------------------------------------------------|--------|--------------|------------|--------------|--------|----------------------------------|--------|-----------|----------|
|                                                    |   | **General**  |       | **Limited**  |   | **Comprehensive**                |   |      |     |
|                                                    |   | **Partner**  |       | **Partners** |   | **Income                (Loss)** |   | **Total** |     |
|                                                    |   |         |       |         |   |                             |   |      |     |   |   |   |   |
| **Balance                at January 1, 2006**           |   | $            | 8,366,000  |         | $      | 25,331,800                       |   | $         | (633,700 | ) | $ | 33,064,100 |   |
|                                                    |   |         |       |         |   |                             |   |      |     |   |   |   |   |
| Participation                in revenues and expenses:  |   |         |       |         |   |                             |   |      |     |   |   |   |   |
| Net                production revenues                  |   |         | 1,072,300  |         |   | 1,991,500                        |   |      | ―  |   |   | 3,063,800 |   |
| Depletion                                               |   |         | (156,600   | )            |   | (869,300                         | )      |      | ―  |   |   | (1,025,900 | ) |
| Accretion                of asset retirement obligation |   |         | (3,700     | )            |   | (6,800                           | )      |      | ―  |   |   | (10,500 | ) |
| General                and administrative               |   |         | (12,600    | )            |   | (23,300                          | )      |      | ―  |   |   | (35,900 | ) |
|     Net                earnings     |   |         | 899,400    |         |   | 1,092,100                        |   |      | ―  |   |   | 1,991,500 |   |
|                                                    |   |         |       |         |   |                             |   |      |     |   |   |   |   |
|                                                    |   |         |       |         |   |                             |   |      |     |   |   |   |   |
| Other comprehensive                income          |   |         | ―    |         |   | ―                          |   |      | 503,400  |   |   | 503,400 |   |
|                                                    |   |         |       |         |   |                             |   |      |     |   |   |   |   |
| Distributions                to partners                |   |         | (1,295,000 | )            |   | (2,402,900                       | )      |      | ―  |   |   | (3,697,900 | ) |
|                                                    |   |         |       |         |   |                             |   |      |     |   |   |   |   |
|                                                    |   |         |       |         |   |                             |   |      |     |   |   |   |   |
| **Balance                at March 31, 2006**            |   | $            | 7,970,400  |         | $      | 24,021,000                       |   | $         | (130,300 | ) | $ | 31,861,100 |   |

** **

----

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**STATEMENT      OF CASH FLOWS**

**(Unaudited)**

|                                                                                                              |   | **Three                Months** |                            | **Three                Months** |   |
|-------------------------------------------------------------------------------------------------------------------|--------|---------------------------------|---------------------------------|---------------------------------|--------|
|                                                                                                              |   | **Ended**                       |                            | **Ended**                       |   |
|                                                                                                              |   | **March                31,**    |                            | **March                31,**    |   |
|                                                                                                              |   | **2006**                        |                            | **2005**                        |   |
|                                                                                                              |   |                            |                            |                            |   |
| **Cash                flows from operating activities**:                                                          |   |                            |                            |                            |   |   |   |
| Net                earnings                                                                                       |   | $                               | 1,991,500                       |                            | $      | 1,070,400 |   |
| Adjustments                to reconcile net earnings to net cash provided by operating                activities: |   |                            |                            |                            |   |   |   |
| Depletion                                                                                                         |   |                            | 1,025,900                       |                            |   | 1,045,500 |   |
| Accretion                of asset retirement obligation                                                           |   |                            | 10,500                          |                            |   | 10,000 |   |
| Decrease                (increase) in accounts receivable - affiliate                                             |   |                            | 1,708,800                       |                            |   | (9,600 | ) |
| (Decrease)                increase in accrued liabilities                                                         |   |                            | (200                            | )                               |   | 8,100 |   |
| Net                cash provided by operating activities                                                          |   |                            | 4,736,500                       |                            |   | 2,124,400 |   |
|                                                                                                              |   |                            |                            |                            |   |   |   |
| **Cash                flows from investing activities:**                                                          |   |                            |                            |                            |   |   |   |
| Purchase                of tangible equipment                                                                     |   |                            | (3,900                          | )                               |   | ― |   |
| Sale              of tangible equipment                                                                           |   |                            |                2,900  |                            |   | ― |   |
| Net                cash used in investing activities                                                              |   |                            | (1,000                          | )                               |   | ― |   |
|                                                                                                              |   |                            |                            |                            |   |   |   |
| **Cash                flows from financing activities:**                                                          |   |                            |                            |                            |   |   |   |
| Distributions                to partners                                                                          |   |                            | (3,697,900                      | )                               |   | (1,337,800 | ) |
| Net                cash used in financing activities                                                              |   |                            | (3,697,900                      | )                               |   | (1,337,800 | ) |
|                                                                                                              |   |                            |                            |                            |   |   |   |
| Net                increase in cash and cash equivalents                                                          |   |                            | 1,037,600                       |                            |   | 786,600 |   |
| Cash                and cash equivalents at beginning of period                                                   |   |                            | 2,300                           |                            |   | 100 |   |
| Cash                and cash equivalents at end of period                                                         |   | $                               | 1,039,900                       |                            | $      | 786,700 |   |

** **

----

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**NOTES      TO FINANCIAL STATEMENTS (CONTINUED)**

**March      31, 2006**

**(Unaudited)**

**NOTE      1 **
**-**
**      NATURE OF OPERATIONS**

**NOTE      2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES**

**Receivables**

**Revenue      Recognition**

----

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**NOTES      TO FINANCIAL STATEMENTS (CONTINUED)**

**March      31, 2006**

**(Unaudited)**

**NOTE      2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)**

**Reclassifications**

**Recently      Issued Financial Accounting Standards**

*Accounting      Changes and Error Corrections*

**Fair      Value of Financial Instruments**

**Asset      Retirement Obligation**

|                                                              |   | **Three                Months** |      |
|-------------------------------------------------------------------|--------|---------------------------------|-----------|
|                                                              |   | **2006**                        |      | **2005** |   |
|                                                              |   |                            |      |   |   |   |   |
| Asset                retirement obligation at beginning of period |   | $                               | 1,147,000 |   | $ | 663,400 |   |
| Accretion                expense                                  |   |                            | 10,500    |   |   | 10,000 |   |
| Total                asset retirement obligation at end of period |   | $                               | 1,157,500 |   | $ | 673,400 |   |

**Supplemental      Cash Flow Information**

----

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**NOTES      TO FINANCIAL STATEMENTS (CONTINUED)**

**March      31, 2006**

**(Unaudited)**

**NOTE      2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)**

**Concentration      of Credit Risk**

**Comprehensive      Income**

**Property      and Equipment**

| Oil                and gas properties consist of the following: |   |                            |       |                               |   |
|-----------------------------------------------------------------|--------|---------------------------------|------------|------------------------------------|--------|
|                                                            |   | **At                March 31,** |       | **At                December 31,** |   |
|                                                            |   | **2006**                        |       | **2005**                           |   |
|                                                            |   |                            |       |                               |   |   |   |
| Capitalized                costs of properties:                 |   |                            |       |                               |   |   |   |
| Proved                properties                                |   | $                               | 747,700    |                               | $      | 747,700 |   |
| Wells                and related equipment                      |   |                            | 35,778,500 |                               |   | 35,777,400 |   |
|                                                            |   |                            | 36,526,200 |                               |   | 36,525,100 |   |
|                                                            |   |                            |       |                               |   |   |   |
| Accumulated                depletion                            |   |                            | (7,533,000 | )                                  |   | (6,507,100 | ) |
|                                                            |   | $                               | 28,993,200 |                               | $      | 30,018,000 |   |

----

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**NOTES      TO FINANCIAL STATEMENTS (CONTINUED)**

**March      31, 2006**

**(Unaudited)**

**NOTE      2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)**

**Oil      and Gas Properties**

**NOTE      3 **
**-**
**      TRANSACTIONS WITH ATLAS RESOURCES, LLC AND ITS AFFILIATES**

| **·  ** | Administrative                costs which are included in general and administrative expenses in                the                Statement of Operations are payable to Atlas at $75 per well per                month.                Administrative costs incurred for the three months ended March 31,                2006                and 2005 were $27,700 and $18,100,                respectively. |
|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| **·  ** | Monthly                well supervision fees which are included in production expenses in                the                Statement of Operations are payable to Atlas at $275 per well per                month                for operating and maintaining the wells. Well supervision fees incurred                for the three months ended March 31, 2006 and 2005 were $101,600                and                $65,200, respectively. |
|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Transportation                fees which are included in production expenses in the Statement of                Operations are payable to Atlas at rates ranging from $.29 - $.35                per mcf                (one thousand cubic feet) to 10% of natural gas revenue. Transportation                costs incurred for the three months ended March 31, 2006 and 2005                were                $244,100 and $102,200,                respectively. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**NOTES      TO FINANCIAL STATEMENTS (CONTINUED)**

**March      31, 2006**

**(Unaudited)**

**NOTE      3 **
**-**
**      TRANSACTIONS WITH ATLAS RESOURCES, LLC AND ITS AFFILIATES      (CONTINUED)**

**Subordination      of Managing General Partner’s Revenue Share**

**NOTE      4 - DERIVATIVE INSTRUMENTS**

----

**ATLAS      AMERICA SERIES 25-2004(A) L.P.**

**(A      Delaware Limited Partnership)**

**NOTES      TO FINANCIAL STATEMENTS (CONTINUED)**

**March      31, 2006**

**(Unaudited)**

**NOTE      4 - DERIVATIVE INSTRUMENTS (CONTINUED)**

| **Natural                Gas Fixed - Price Swaps** |   |                           |    |                           |   |
|----------------------------------------------------|--------|--------------------------------|---------|--------------------------------|--------|
|                                               |   |                           |    |                           |   |   |   |
| **Production**                                     |   |                           |    | **Average**                    |   | **Fair                Value** |   |
| **Period**                                         |   | **Volumes**                    |    | **Fixed                Price** |   | **Liability                (2)** |   |
| **Ended                March 31,**                 |   | **(MMBTU)                (1)** |    | **(per                MMBTU)** |   | **(in                thousands)** |   |
|                                               |   |                           |    |                           |   |   |   |
| 2007                                               |   |                           | 252,400 |                           | $      | 10.76 |   | $ | 513 |   |
| 2008                                               |   |                           | 905,500 |                           |   | 8.76 |   |   | (690 | ) |
| 2009                                               |   |                           | 755,200 |                           |   | 8.71 |   |   | (30 | ) |
| 2010                                               |   |                           | 228,300 |                           |   | 8.35 |   |   | 77 |   |
|                                               |   |                           |    |                           |   |   |   |   |   |   |
|                                               |   |                           |    |                           |   | Total                liability  |   | $ | (130 | ) |

| (1)   | MMBTU                represents million British Thermal                Units. |
|-----------------|-------------------------------------------------------------------------------|

| (2)   | Fair                value based on forward NYMEX natural gas prices, as                applicable. |
|-----------------|----------------------------------------------------------------------------------------------------|

|                                  |   | **March                31, 2006** |   | **December                31, 2005** |   |
|---------------------------------------|--------|-----------------------------------|--------|--------------------------------------|--------|
|                                  |   | **Book                Value**     |   | **Fair                Value**        |   | **Book                Value** |   | **Fair                Value** |   |
| Assets                                |   |                              |   |                                 |   |   |   |   |   |   |   |   |   |
| Derivative                instruments |   | $                                 | 803    |                                 | $      | 803 |   | $ | 182 |   | $ | 182 |   |
|                                  |   | $                                 | 803    |                                 | $      | 803 |   | $ | 182 |   | $ | 182 |   |
| Liabilities                           |   |                              |   |                                 |   |   |   |   |   |   |   |   |   |
| Derivative                instruments |   | $                                 | (933   | )                                    | $      | (933 | ) | $ | (816 | ) | $ | (816 | ) |
|                                  |   | $                                 | (130   | )                                    | $      | (130 | ) | $ | (634 | ) | $ | (634 | ) |

**NOTE      5 - COMPREHENSIVE INCOME**

|                                                                                              |   | **Three                Months Ended March 31,** |      |
|---------------------------------------------------------------------------------------------------|--------|-------------------------------------------------|-----------|
|                                                                                              |   | **2006**                                        |      | **2005** |   |
|                                                                                              |   |                                            |      |   |   |   |   |
| Net                earnings                                                                       |   | $                                               | 1,991,500 |   | $ | 1,070,400 |   |
| Other                comprehensive income (loss):                                                 |   |                                            |      |   |   |   |   |
| Unrealized                holding gains on hedging contracts                                      |   |                                            | 701,900   |   |   | ― |   |
| Less:                reclassification adjustment for (gain) realized in net                income |   |                                            | (198,500  | ) |   | ― |   |
|                                                                                              |   |                                            | 503,400   |   |   | ― |   |
| Comprehensive                income                                                               |   | $                                               | 2,494,900 |   | $ | 1,070,400 |   |

----

| **ITEM                2.** | **MANAGEMENT’S                DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION OR PLAN OF OPERATIONS                (UNAUDITED)** |
|----------------------------|---------------------------------------------------------------------------------------------------------------------------------------|

**Forward-Looking      Statements**

**General**

----

**Results      of Operations**

|                                              |   | **Three                Months** |   | **Three                Months** |   |
|---------------------------------------------------|--------|---------------------------------|--------|---------------------------------|--------|
|                                              |   | **Ended**                       |   | **Ended**                       |   |
|                                              |   | **March                31,**    |   | **March                31,**    |   |
|                                              |   | **2006**                        |   | **2005**                        |   |
| Production                revenues (in thousands) |   |                            |   |                            |   |   |   |
| Gas                (1)                            |   | $                               | 3,436  |                            | $      | 2,228 |   |
| Oil                                               |   | $                               | 34     |                            | $      | 126 |   |
| Total                                             |   | $                               | 3,470  |                            | $      | 2,354 |   |
|                                              |   |                            |   |                            |   |   |   |
| Production                volumes:                |   |                            |   |                            |   |   |   |
| Gas                (mcf/day) (1) (3)              |   |                            | 3,632  |                            |   | 3,407 |   |
| Oil                (bbls/day)                     |   |                            | 6      |                            |   | 32 |   |
| Total                (mcfe/day) (3)               |   |                            | 3,668  |                            |   | 3,599 |   |
|                                              |   |                            |   |                            |   |   |   |
| Average                sales prices:              |   |                            |   |                            |   |   |   |
| Gas                (per mcf) (2) (3)              |   | $                               | 10.51  |                            | $      | 7.27 |   |
| Oil                (per bbl) (3)                  |   | $                               | 61.50  |                            | $      | 44.12 |   |
|                                              |   |                            |   |                            |   |   |   |
| Average                production costs:          |   |                            |   |                            |   |   |   |
| As                a percent of sales              |   |                            | 12     | %                               |   | 9 | % |
| Per                mcfe (3)                       |   | $                               | 1.23   |                            | $      | .62 |   |
|                                              |   |                            |   |                            |   |   |   |
| Depletion                per mcfe                 |   | $                               | 3.11   |                            | $      | 3.23 |   |

| (1)   | Excludes                sales of residual gas and sales to                landowners. |
|-----------------|---------------------------------------------------------------------------------------|

| (2)   | The                average sales price per mcf before the effects of hedging was $9.70                for                the period ended March 31, 2006. There were no hedging transactions                in the                period ended March 31, 2005. |
|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (3)   | “Mcf”                means thousand cubic feet, “mcfe” means thousand cubic feet equivalent and                “bbls” means barrels. Bbls are converted to mcfe using the ratio of six                mcfs to one bbl. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

**Natural      Gas Revenues. **

**Oil      Revenues**

----

**Expenses.**

**Liquidity      and Capital Resources. **

**Critical      Accounting Policies**

----

**Recently      Issued Financial Accounting Standards **

*Accounting      Changes and Error Corrections*

**ITEM      3. CONTROLS AND PROCEDURES**

**Evaluation      of Disclosure Controls and Procedures**

**PART      II.**
**OTHER      INFORMATION**

**ITEM      6. Exhibits**

**EXHIBIT      INDEX**

| **Exhibit                  No.** |   | **Description**                                                                                                                                                                            |
|----------------------------------|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                             |   |                                                                                                                                                                                       |
| 31.1                             |   | Certification                  Pursuant to Rule 13a-14/15(d)-14.                                                                                                                           |
| 31.2                             |   | Certification                  Pursuant to Rule 13a-14/15(d)-14.                                                                                                                           |
| 32.1                             |   | Certification                  Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section                  906 of                  the Sarbanes Oxley Act of 2002                  |
| 32.2                             |   | Certification                  Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section                  906 of                  the Sarbanes Oxley Act of                  2002 |

----

**SIGNATURES**

| Pursuant                to the requirements of the Securities Exchange Act of 1934, the registrant                has duly caused this report to be signed on its behalf by the undersigned,                thereunto duly authorized.                   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                                                                                                                     |   |   |
|                                                                                                                                                                                                                                                     |   |   |
| Atlas                America Public #25-2004 (A) L.P.                                                                                                                                                                                                    |
|                                                                                                                                                                                                                                                     |   |   |
|                                                                                                                                                                                                                                                     |   | Atlas                Resources, LLC, Managing General Partner |
|                                                                                                                                                                                                                                                     |   |   |
| Date:                May 12, 2006                                                                                                                                                                                                                        |   | By:/s/                Freddie M. Kotek |
|                                                                                                                                                                                                                                                     |   | Freddie                M. Kotek, Chairman of the Board of Directors, Chief Executive                Officer |
|                                                                                                                                                                                                                                                     |   | and                President |
|                                                                                                                                                                                                                                                     |   |   |
|                                                                                                                                                                                                                                                     |   |   |
| In                accordance with the Exchange Act, this report has been signed by                the                following persons on behalf of the registrant and in the capacities                and on                the dates indicated.  |
|                                                                                                                                                                                                                                                     |   |   |
|                                                                                                                                                                                                                                                     |   |   |
| Date:                May 12, 2006                                                                                                                                                                                                                        |   | By:/s/                Freddie M. Kotek |
|                                                                                                                                                                                                                                                     |   | Freddie                M. Kotek, Chairman of the Board of Directors, Chief                Executive |
|                                                                                                                                                                                                                                                     |   | Officer                and President |
|                                                                                                                                                                                                                                                     |   |   |
|                                                                                                                                                                                                                                                     |   |   |
|                                                                                                                                                                                                                                                     |   |   |
|                                                                                                                                                                                                                                                     |   |   |
| Date:                May 12, 2006                                                                                                                                                                                                                        |   | By:/s/                Nancy J. McGurk |
|                                                                                                                                                                                                                                                     |   | Nancy                J. McGurk, Vice President, Chief Financial Officer and                Chief |
|                                                                                                                                                                                                                                                     |   | Accounting                Officer |
|                                                                                                                                                                                                                                                     |   |   |
|                                                                                                                                                                                                                                                     |   |   |

----