25 is a stretch on anything but HF bands.

With a technician class, in the US, you are mostly limited to vhf and unfortunately bands. Those primarily work on line of sight. 5-10 miles, no problem on a 5 watt handheld radio. A larger base or mobile station of say 50 watts would be needed for more. 20 miles is very realistic on higher altitude and/or line of sight. 25 and up is possible but much more challenging and working with antennas, placements, etc ..