Fait général: 1253 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1253 is a value of n for which s(n+1) = 2s(n).
Culture générale: 1253 is a boring number.
Date historique: June 6th is the day in 2005 that the United States Supreme Court upholds a federal law banning cannabis, including medical marijuana, in Gonzales v. Raich.