85372039925 has 12 divisors (see below), whose sum is σ = 105866100996. Its totient is φ = 68294553600.

The previous prime is 85372039919. The next prime is 85372039999. The reversal of 85372039925 is 52993027358.

It can be written as a sum of positive squares in 6 ways, for example, as 2691638161 + 82680401764 = 51881^2 + 287542^2 .

It is not a de Polignac number, because 85372039925 - 2⁶ = 85372039861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 608507 + ... + 735543.

It is an arithmetic number, because the mean of its divisors is an integer number (8822175083).

Almost surely, 2^85372039925 is an apocalyptic number.

It is an amenable number.

85372039925 is a deficient number, since it is larger than the sum of its proper divisors (20494061071).

85372039925 is a wasteful number, since it uses less digits than its factorization.

85372039925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153928 (or 153923 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 85372039925 in words is "eighty-five billion, three hundred seventy-two million, thirty-nine thousand, nine hundred twenty-five".