Selected answers from the Dumb SEO Questions Facebook & G+ community.
Jobin John: Nope. Vanity numbers should be entered numerically.
Check: under Primar Phone
https://support.google.com/business/answer/3370250?hl=en
JL Faverio: Hmm... I`m just concerned about NAP consistency.
Jobin John: I would keep the normal phone no. format when doing citations however use Vanity no. format on traditional marketing platforms like flyers, brochures etc.