It is number 252. If you want to know about the numbers of Pokemon GO to Pokemon.com, and click pokedex. Search a Pokemon and it'll tell you the number in a corner.
Well, you can add Treeko's information to your Pokedex when you battle May. You can only get Treeko by trading.
treeko isn't in this game
not possible only if trade from emarld to get it in emarld you must complte the pokedex you must get 386 in your pokedex that goes from treeko to deoxys.
you cant you have to migrate it and u have to have the national pokedex in Pokemon diamond
go to Google and search Pokemon sapphire pokedex and it will give you a list of all the ones you can catch, you can also search for a national pokedex and look for treeko and that is the beginning of the sapphire/ruby/emerald pokedex(heres a link of the best one ive found sofar ... http://Lloyd.truepath.com/Jonathan/PKMNRS_Pokemon.htm ... ) go to Google and search Pokemon sapphire pokedex and it will give you a list of all the ones you can catch, you can also search for a national pokedex and look for treeko and that is the beginning of the sapphire/ruby/emerald pokedex
Chinchou is number 170 in the National Pokedex, number 174 in the New Pokedex, number 176 in the Johto Pokedex, #181 in the Hoenn Pokedex, and number 147 in the Coastal Kalos Pokedex.
Sceptile is number 3 in the Hoenn Pokedex and number 254 in the National Pokedex.
Rayquaza is Pokedex number 384.
ON sinnoh pokedex is number 15 Kricketot on Natiol pokedex number 15 is: Beedrill
he is number 153 in the sinnoh pokedex
Aggron is number 306 in the pokedex.
Lucario's pokedex number in the National Pokedex is 448.