131685025 has 6 divisors (see below), whose sum is σ = 163289462. Its totient is φ = 105348000.

The previous prime is 131685017. The next prime is 131685079. The reversal of 131685025 is 520586131.

It can be written as a sum of positive squares in 3 ways, for example, as 788544 + 130896481 = 888^2 + 11441^2 .

It is not a de Polignac number, because 131685025 - 2³ = 131685017 is a prime.

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, 2633676 + ... + 2633725.

Almost surely, 2^131685025 is an apocalyptic number.

It is an amenable number.

131685025 is a deficient number, since it is larger than the sum of its proper divisors (31604437).

131685025 is an equidigital number, since it uses as much as digits as its factorization.

131685025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5267411 (or 5267406 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 131685025 is about 11475.4095787471. The cubic root of 131685025 is about 508.7590294747.

The spelling of 131685025 in words is "one hundred thirty-one million, six hundred eighty-five thousand, twenty-five".