85525137 has 24 divisors (see below), whose sum is σ = 130447200. Its totient is φ = 53846208.

The previous prime is 85525133. The next prime is 85525157. The reversal of 85525137 is 73152558.

It is not a de Polignac number, because 85525137 - 2² = 85525133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85525133) 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, 75189 + ... + 76317.

It is an arithmetic number, because the mean of its divisors is an integer number (5435300).

Almost surely, 2^85525137 is an apocalyptic number.

It is an amenable number.

85525137 is a deficient number, since it is larger than the sum of its proper divisors (44922063).

85525137 is a wasteful number, since it uses less digits than its factorization.

85525137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1594 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 85525137 is about 9247.9801578507. The cubic root of 85525137 is about 440.5865747690.

It can be divided in two parts, 8552 and 5137, that added together give a square (13689 = 117²).

The spelling of 85525137 in words is "eighty-five million, five hundred twenty-five thousand, one hundred thirty-seven".