Does the unlocked iPhone 5 come with a number?

So I have an iPhone 5 with Verizon and I want to buy my nephew (12Yrs.) one for his upcoming birthday, now I want to get him an unlocked iPhone 5 because I'm no sure what his parents will say about it because of the monthly bill on Verizon.
Does the unlocked Phone 5 come with a phone number or something that can be contacted with? Otherwise I feel like the phone would be useless if he can't have a number with GSM card.

The carrier assigns the number to the phone. All phones initially come with no number assigned to them and have to be programmed to work with a certain number based on the account you set up. Just get him a 5th Gen iPod Touch… It's basically the same thing, minus the phone part that he honestly doesn't need at age 12, plus it's a lot cheaper for you.

When you buy unlocked phones its just the phone you are getting. Its up to you which SIM card to put in (which would have the number) & use.

So does the iPhone 5s come with a number or do you have to set

So does the iPhone 5s come with a number or do you have to set