115125631 has 4 divisors (see below), whose sum is σ = 116843992. Its totient is φ = 113407272.

The previous prime is 115125623. The next prime is 115125653. The reversal of 115125631 is 136521511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115125631 - 2³ = 115125623 is a prime.

It is a super-2 number, since 2×115125631² = 26507821826296322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115125596 and 115125605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115125671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859080 + ... + 859213.

It is an arithmetic number, because the mean of its divisors is an integer number (29210998).

Almost surely, 2^115125631 is an apocalyptic number.

115125631 is a deficient number, since it is larger than the sum of its proper divisors (1718361).

115125631 is an equidigital number, since it uses as much as digits as its factorization.

115125631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718360.

The product of its digits is 900, while the sum is 25.

The square root of 115125631 is about 10729.6612714475. The cubic root of 115125631 is about 486.4714317175.

The spelling of 115125631 in words is "one hundred fifteen million, one hundred twenty-five thousand, six hundred thirty-one".