Fatto matematico: 2521 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 2521 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: November 25th is the day in 1992 that the Federal Assembly of Czechoslovakia votes to split the country into the Czech Republic and Slovakia from January 1, 1993.