General fact: 250 is the number of Pokémon originally available in Pokémon Gold and Silver before Celebi was added.
Mathematical fact: 250 is the smallest multi-digit number so that the sum of the squares of its prime factors equals the sum of the squares of its digits.
Trivia: 250 is the number of Pokémon originally available in Pokémon Gold and Silver before Celebi was added.
Historical date: September 6th is the day in 1963 that the Centre for International Industrial Property Studies (CEIPI) is founded.