The first step is to understand what it means when a number has an exponent. The “power” of a number indicates how many times the base would be multiplied by itself to reach the correct value.
The second step is to write the number in the base-exponent form, and lastly calculate what the final result would be. Consider the example of 2 to the power of 4: in exponent form that would be
So re-applying these steps to our particular problem, we first convert our word problem to a base-exponent form of:
To simplify this, all that is needed is to multiply it out:
25 x 25 x 25 x 25 x ... (for a total of 91 times) = 16313261169996311316775735273141368889252910645172416369396591138674308111493715568057240317134670704035670496523380279541015625
Therefore, 25 to the power of 91 is 16313261169996311316775735273141368889252910645172416369396591138674308111493715568057240317134670704035670496523380279541015625.