115515025 has 6 divisors (see below), whose sum is σ = 143238662. Its totient is φ = 92412000.

The previous prime is 115515019. The next prime is 115515053. The reversal of 115515025 is 520515511.

It can be written as a sum of positive squares in 3 ways, for example, as 25796241 + 89718784 = 5079^2 + 9472^2 .

It is not a de Polignac number, because 115515025 - 2⁹ = 115514513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 4620601 = 115515025 / (1 + 1 + 5 + 5 + 1 + 5 + 0 + 2 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2310276 + ... + 2310325.

Almost surely, 2^115515025 is an apocalyptic number.

It is an amenable number.

115515025 is a deficient number, since it is larger than the sum of its proper divisors (27723637).

115515025 is an equidigital number, since it uses as much as digits as its factorization.

115515025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620611 (or 4620606 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 115515025 is about 10747.7916336334. The cubic root of 115515025 is about 487.0192850620.

The spelling of 115515025 in words is "one hundred fifteen million, five hundred fifteen thousand, twenty-five".