125513636 has 6 divisors (see below), whose sum is σ = 219648870. Its totient is φ = 62756816.

The previous prime is 125513629. The next prime is 125513671. The reversal of 125513636 is 636315521.

It can be written as a sum of positive squares in only one way, i.e., 74476900 + 51036736 = 8630^2 + 7144^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15689201 + ... + 15689208.

It is an arithmetic number, because the mean of its divisors is an integer number (36608145).

Almost surely, 2^125513636 is an apocalyptic number.

It is an amenable number.

125513636 is a deficient number, since it is larger than the sum of its proper divisors (94135234).

125513636 is a wasteful number, since it uses less digits than its factorization.

125513636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31378413 (or 31378411 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

The square root of 125513636 is about 11203.2868391379. The cubic root of 125513636 is about 500.6839121020.

The spelling of 125513636 in words is "one hundred twenty-five million, five hundred thirteen thousand, six hundred thirty-six".