Let `sigma(n)` denotes the sum of digits of a natural number `n` .If `N` is the smallest natural number such that `sigma(N)=2020`, then find the value of `sigma(5N+2021)`

If m and n are the two natural number such that m^(n)=25 , then find the value of n^(m) :-

Write the sum of first n odd natural numbers.

Write the sum of first n even natural numbers.

Write the sum of first n even natural numbers.

The sum of n odd natural numbers is

Find the sum of first n natural numbers.

Find the sum of first n odd natural numbers.

Find the sum of first n natural numbers.

Find the sum of first n natural numbers.

Let S(M) denote the sum of the digits of a positive integer M written in base 10. Let N be the smallest positive integer such that S(N) = 2017. Find the value of S(5N + 2017)