Fatto generale: 20249 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 20249 is an uninteresting number.
Trivia: 20249 is a boring number.
Data storica: June 9th is the day in 1968 that U.S. President Lyndon B. Johnson declares a national day of mourning following the assassination of Senator Robert F. Kennedy.