115640525 has 48 divisors (see below), whose sum is σ = 192571008. Its totient is φ = 66528000.

The previous prime is 115640521. The next prime is 115640533. The reversal of 115640525 is 525046511.

It is a happy number.

It is not a de Polignac number, because 115640525 - 2² = 115640521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115640521) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 22715 + ... + 27335.

It is an arithmetic number, because the mean of its divisors is an integer number (4011896).

Almost surely, 2^115640525 is an apocalyptic number.

It is an amenable number.

115640525 is a deficient number, since it is larger than the sum of its proper divisors (76930483).

115640525 is a wasteful number, since it uses less digits than its factorization.

115640525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662 (or 4657 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 115640525 is about 10753.6284574092. The cubic root of 115640525 is about 487.1955934367.

The spelling of 115640525 in words is "one hundred fifteen million, six hundred forty thousand, five hundred twenty-five".