115525131020 has 96 divisors (see below), whose sum is σ = 265891248000. Its totient is φ = 41906202624.

The previous prime is 115525131019. The next prime is 115525131037. The reversal of 115525131020 is 20131525511.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3617081 + ... + 3648879.

It is an arithmetic number, because the mean of its divisors is an integer number (2769700500).

Almost surely, 2^115525131020 is an apocalyptic number.

115525131020 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 115525131020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132945624000).

115525131020 is an abundant number, since it is smaller than the sum of its proper divisors (150366116980).

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

115525131020 is a wasteful number, since it uses less digits than its factorization.

115525131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32067 (or 32065 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 115525131020 its reverse (20131525511), we get a palindrome (135656656531).

The spelling of 115525131020 in words is "one hundred fifteen billion, five hundred twenty-five million, one hundred thirty-one thousand, twenty".