115525520 has 120 divisors (see below), whose sum is σ = 304212672. Its totient is φ = 40454400.

The previous prime is 115525513. The next prime is 115525537. The reversal of 115525520 is 25525511.

115525520 = T₅ + T₆ + ... + T₈₈₄.

It is a super-2 number, since 2×115525520² = 26692291542540800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115525520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1627085 + ... + 1627155.

Almost surely, 2^115525520 is an apocalyptic number.

115525520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115525520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152106336).

115525520 is an abundant number, since it is smaller than the sum of its proper divisors (188687152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115525520 is a wasteful number, since it uses less digits than its factorization.

115525520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 115525520 is about 10748.2798623780. The cubic root of 115525520 is about 487.0340338292.

Subtracting from 115525520 its reverse (25525511), we obtain a palindrome (90000009).

The spelling of 115525520 in words is "one hundred fifteen million, five hundred twenty-five thousand, five hundred twenty".