85677525 has 36 divisors (see below), whose sum is σ = 154331268. Its totient is φ = 45434880.

The previous prime is 85677511. The next prime is 85677547. The reversal of 85677525 is 52577658.

85677525 is a `hidden beast` number, since 8 + 56 + 77 + 525 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 14814801 + 70862724 = 3849^2 + 8418^2 .

It is not a de Polignac number, because 85677525 - 2⁴ = 85677509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42439 + ... + 44411.

Almost surely, 2^85677525 is an apocalyptic number.

It is an amenable number.

85677525 is a deficient number, since it is larger than the sum of its proper divisors (68653743).

85677525 is a wasteful number, since it uses less digits than its factorization.

85677525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182 (or 2174 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 85677525 is about 9256.2154793414. The cubic root of 85677525 is about 440.8480973738.

The spelling of 85677525 in words is "eighty-five million, six hundred seventy-seven thousand, five hundred twenty-five".