115515242525 has 12 divisors (see below), whose sum is σ = 148178174100. Its totient is φ = 89225566080.

The previous prime is 115515242477. The next prime is 115515242551. The reversal of 115515242525 is 525242515511.

It can be written as a sum of positive squares in 6 ways, for example, as 5281946329 + 110233296196 = 72677^2 + 332014^2 .

It is not a de Polignac number, because 115515242525 - 2²⁴ = 115498465309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79664960 + ... + 79666409.

It is an arithmetic number, because the mean of its divisors is an integer number (12348181175).

Almost surely, 2^115515242525 is an apocalyptic number.

It is an amenable number.

115515242525 is a deficient number, since it is larger than the sum of its proper divisors (32662931575).

115515242525 is a wasteful number, since it uses less digits than its factorization.

115515242525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159331408 (or 159331403 counting only the distinct ones).

The product of its digits is 100000, while the sum is 38.

The spelling of 115515242525 in words is "one hundred fifteen billion, five hundred fifteen million, two hundred forty-two thousand, five hundred twenty-five".