  We analyzed the daily sunspot-group data reported by the Greenwich
Photoheliographic Results (GPR) during the period 1874-1976 and Debrecen
Photoheligraphic Data (DPD) during the period 1977-2017, and the revised
Version-2 of ISSN during the period 1874-2017. We determined the amplitude of
the Solar Cycles 12-24 and the 13-month smoothed monthly mean corrected areas
of the sunspot groups in the Sun's whole-sphere (WSGA), northern hemisphere
(NSGA), and southern hemisphere (SSGA) at the epochs of the maxima of the Solar
Cycles 12-24. Using all these we obtained the relations similar to that found
in our earlier analyzes -- i.e., the existence of a high correlation between
the sum of the areas of sunspot groups in the southern-hemisphere
near-equatorial band during a small interval (7-9 months) just after a maximum
epoch of a solar cycle and the amplitude of next solar cycle -- separately for
the Sun's whole-sphere and northern- and southern-hemispheres. By using these
relations we predicted ~701 msh (millionth of solar hemisphere), ~429 msh, and
~366 msh for the values of WSGA, NSGA, and SSGA, respectively, at the maximum
epoch of the Solar Cycle 25. We predicted 86 + or - 18 for the amplitude of
Solar Cycle 25. The 13-month smoothed monthly mean sunspot-group area highly
correlate with that of ISSN. Using this relation and the predicted values of
WSGA, NSGA, and SSGA we have obtained 68 + or -11 for the amplitude of Solar
Cycle 25, which is slightly lower than the aforementioned predicted value, and
39 + or - 4 and 31 + or - 6 for the values of northern- and
southern-hemispheres' sunspot numbers at the maximum epoch of Solar Cycle 25.
Overall, our results suggest that the amplitude of Solar Cycle 25 would be
25%-40% smaller, and the corresponding north-south asymmetry would be much
smaller, than those of Solar Cycle 24.
