Fait général: 1825 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1825 is the smallest number whose square begins with three 3's.
Culture générale: 1825 is an uninteresting number.
Date historique: December 29th is the day in 1835 that the Treaty of New Echota is signed, ceding all the lands of the Cherokee east of the Mississippi River to the United States.