Fatto generale: 2574 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2574 is a value of n for which _{2n}C_{n} is divisible by n^{2}.
Trivia: 2574 is an unremarkable number.
Data storica: January 17th is the day in 1903 that El Yunque National Forest in Puerto Rico becomes part of the United States National Forest System as the Luquillo Forest Reserve.