Show notes:

1. A pokemon can have a max of 510 EV points total
2. A pokemon can have a max of 252 (as of Gen VI) EVs in a single stat

Links:

1. Pokemon EV yield - http://bulbapedia.bulbagarden.net/wiki/List_of_Pok%C3%A9mon_by_effort_value_yield
2. GEN VI EV training guide - http://www.gamefaqs.com/boards/696959-pokemon-x/67749756