What is radio station 95.7 phone number?

There are several dozen stations using the FM frequency 96.5 Mhz, so you would have to specify a city. (see the related questions below)

Some of the stations are:

KOIT - San Francisco, CA

KPOW - Miami, FL (Power 96)

KYXY - San Diego, CA (Kixie)

WDOD - Chattanooga (Hits96, formerly The Mountain)

WKAS - Cleveland, OH (Kiss-FM)

WXCC - Williamson, WV (Coal Country