Fait général: 4225 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4225 is the smallest number that can be written as the sum of two squares in 12 ways.
Culture générale: 4225 is an uninteresting number.
Date historique: July 26th is the day in 1509 that the Emperor Krishnadeva Raya ascends to the throne, marking the beginning of the regeneration of the Vijayanagara Empire.