25 (عدد)

25 (خمس وعشرون) هو عدد صحيح  says: "ℕ is the set of natural numbers (positive integers)" (p. 3) include zero in the natural numbers: "Intuitively, the set  of all "natural numbers" may be described as follows:  contains an "initial" number 0; ...". They follow that with their version of the Peano Postulates. (p. 15) يلي العدد 24 ويسبق العدد 26 وهو عدد طبيعي موجب.
 مراجع 

تصنيف:أعداد صحيحة