113225797521 has 12 divisors (see below), whose sum is σ = 163554921972. Its totient is φ = 75480842976.

The previous prime is 113225797507. The next prime is 113225797523. The reversal of 113225797521 is 125797522311.

113225797521 is a `hidden beast` number, since 1 + 1 + 3 + 2 + 2 + 579 + 75 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25079156496 + 88146641025 = 158364^2 + 296895^2 .

It is not a de Polignac number, because 113225797521 - 2²⁵ = 113192243089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113225797523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1446 + ... + 475871.

It is an arithmetic number, because the mean of its divisors is an integer number (13629576831).

Almost surely, 2^113225797521 is an apocalyptic number.

It is an amenable number.

113225797521 is a deficient number, since it is larger than the sum of its proper divisors (50329124451).

113225797521 is a wasteful number, since it uses less digits than its factorization.

113225797521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503680 (or 503677 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The spelling of 113225797521 in words is "one hundred thirteen billion, two hundred twenty-five million, seven hundred ninety-seven thousand, five hundred twenty-one".