115890725 has 6 divisors (see below), whose sum is σ = 143704530. Its totient is φ = 92712560.

The previous prime is 115890707. The next prime is 115890743. The reversal of 115890725 is 527098511.

It is an interprime number because it is at equal distance from previous prime (115890707) and next prime (115890743).

It can be written as a sum of positive squares in 3 ways, for example, as 5094049 + 110796676 = 2257^2 + 10526^2 .

It is not a de Polignac number, because 115890725 - 2⁸ = 115890469 is a prime.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 2317790 + ... + 2317839.

It is an arithmetic number, because the mean of its divisors is an integer number (23950755).

Almost surely, 2^115890725 is an apocalyptic number.

It is an amenable number.

115890725 is a deficient number, since it is larger than the sum of its proper divisors (27813805).

115890725 is an equidigital number, since it uses as much as digits as its factorization.

115890725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635639 (or 4635634 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 38.

The square root of 115890725 is about 10765.2554544702. The cubic root of 115890725 is about 487.5467060226.

The spelling of 115890725 in words is "one hundred fifteen million, eight hundred ninety thousand, seven hundred twenty-five".