85656725 has 24 divisors (see below), whose sum is σ = 132426048. Its totient is φ = 53395200.

The previous prime is 85656721. The next prime is 85656737. The reversal of 85656725 is 52765658.

It is not a de Polignac number, because 85656725 - 2² = 85656721 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85656721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20324 + ... + 24173.

It is an arithmetic number, because the mean of its divisors is an integer number (5517752).

Almost surely, 2^85656725 is an apocalyptic number.

It is an amenable number.

85656725 is a deficient number, since it is larger than the sum of its proper divisors (46769323).

85656725 is a wasteful number, since it uses less digits than its factorization.

85656725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44525 (or 44520 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

The square root of 85656725 is about 9255.0918417917. The cubic root of 85656725 is about 440.8124194736.

The spelling of 85656725 in words is "eighty-five million, six hundred fifty-six thousand, seven hundred twenty-five".