85685566925 has 24 divisors (see below), whose sum is σ = 123419338752. Its totient is φ = 57792600000.

The previous prime is 85685566861. The next prime is 85685566927. The reversal of 85685566925 is 52966558658.

It is not a de Polignac number, because 85685566925 - 2⁶ = 85685566861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85685566927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4002701 + ... + 4024050.

It is an arithmetic number, because the mean of its divisors is an integer number (5142472448).

Almost surely, 2^85685566925 is an apocalyptic number.

It is an amenable number.

85685566925 is a deficient number, since it is larger than the sum of its proper divisors (37733771827).

85685566925 is a wasteful number, since it uses less digits than its factorization.

85685566925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8026829 (or 8026824 counting only the distinct ones).

The product of its digits is 155520000, while the sum is 65.

The spelling of 85685566925 in words is "eighty-five billion, six hundred eighty-five million, five hundred sixty-six thousand, nine hundred twenty-five".