+**251** is a [natural number](/wiki/Natural_Number) and a [prime number](/wiki/Prime_Number). It holds particular note as the National Pokédex number for Celebi, a mythical Grass/Psychic type Pokémon.
+## See also
+- [Number Theory](/wiki/Number_Theory)
+- [Prime Numbers](/wiki/Prime_Numbers)
+- [Pokémon](/wiki/Pokemon)
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