In mathematics we like to write expressions concisely. For example, we will often
write the expression 5 × 5 × 5 × 5 as 54. The lower number 5 is called the base,
the raised 4 is called the exponent, and the whole expression 54 is called a power.
So 53 means 5 × 5 × 5 and is equal to 125.
What are the last three digits in the integer equal to 5 to the power of 2020?