Numbness in my right hand

[Ered_Lithui]

In that case, get some gloves! 25 miles is plenty far enough for nerves to get aggravated. (I can't ride gloveless more than five miles without getting that tingling/numbness.) A good pair of gloves will probably make a big difference. You could try a glove with a split along the palm where the ulnar nerve runs. They don't necessarily need a lot of padding, just enough on either side so that pressure on the nerve is reduced. Or the split may not be important in your case (my best gloves are simply lightly padded all across).