Calculate C and R in a CMOS Crystal Oscillator
An easy solution is to buy a ECS-100A-251.7 25.175 MHz oscillator, if that's close enough for you. 

R1 has to do with limiting the drive power to the crystal. C is calculated from the load capacitance on the crystal datasheet and the input+ stray capacitance- twice the load capacitance minus the input+stray capacitance. 

You could also buy a pre-programmed programmable oscillator such as the SIT2018BE-S1-18E-25.166000G which is a Digikey value-added item and available in 25.166 MHz. Also available in 25.175MHz as SIT8008BI-13-18E-25.175000G.

I would not suggest using this circuit- oscillators made with Schmitt triggers are notoriously unpleasant. It should only be attempted with an unbuffered inverter in the oscillator position.