131575725 has 48 divisors (see below), whose sum is σ = 242811840. Its totient is φ = 69854400.

The previous prime is 131575681. The next prime is 131575751. The reversal of 131575725 is 527575131.

It is a happy number.

131575725 is a `hidden beast` number, since 1 + 31 + 57 + 572 + 5 = 666.

It is not a de Polignac number, because 131575725 - 2⁸ = 131575469 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131575725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 267730 + ... + 268220.

It is an arithmetic number, because the mean of its divisors is an integer number (5058580).

Almost surely, 2^131575725 is an apocalyptic number.

131575725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131575725 is a deficient number, since it is larger than the sum of its proper divisors (111236115).

131575725 is a wasteful number, since it uses less digits than its factorization.

131575725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907 (or 896 counting only the distinct ones).

The product of its digits is 36750, while the sum is 36.

The square root of 131575725 is about 11470.6462328851. The cubic root of 131575725 is about 508.6182320076.

The spelling of 131575725 in words is "one hundred thirty-one million, five hundred seventy-five thousand, seven hundred twenty-five".