I don't know of anyone who even makes a 25HP 1 phase motor.
If it is a Hydraulic elevator, you could use a 3 phase motor and power it from a VFD. But the VFD would need to be 50HP for powering from a 1 phase supply, so that means the maximum input current will be around 145A. I mention this because the NEC says you must base the circuit sizing on 125% of their MAXIMUM input current rating of the VFD (not the load FLA). So to do this from a 1 phase supply, you will need a 200A service all by itself.
If it's a traction elevator, then that is not going to work*. If it's a DC traction elevator, you would have to check with the supplier to see if that will be compatible with a 1 phase supply, some DC drives are not. If it's an AC traction elevator, then someone is probably having a custom 1 phase 25HP motor made and you will have a hard time starting that Across-the-Line in my opinion.
*Traction elevators need specialized power control not common on VFDs, i.e. with regards to what happens if it fails. There are VFDs available for traction elevators, but they are typically only sold by the elevator suppliers because of liability issues.