85625631 has 24 divisors (see below), whose sum is σ = 152224800. Its totient is φ = 45164736.

The previous prime is 85625629. The next prime is 85625641. The reversal of 85625631 is 13652658.

It is not a de Polignac number, because 85625631 - 2¹ = 85625629 is a prime.

It is a super-2 number, since 2×85625631² = 14663497368296322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85625611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51456 + ... + 53093.

It is an arithmetic number, because the mean of its divisors is an integer number (6342700).

Almost surely, 2^85625631 is an apocalyptic number.

85625631 is a deficient number, since it is larger than the sum of its proper divisors (66599169).

85625631 is a wasteful number, since it uses less digits than its factorization.

85625631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104575 (or 104572 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 85625631 is about 9253.4118572557. The cubic root of 85625631 is about 440.7590736709.

The spelling of 85625631 in words is "eighty-five million, six hundred twenty-five thousand, six hundred thirty-one".