85915525 has 24 divisors (see below), whose sum is σ = 109010880. Its totient is φ = 67155840.

The previous prime is 85915523. The next prime is 85915537. The reversal of 85915525 is 52551958.

It is not a de Polignac number, because 85915525 - 2¹ = 85915523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85915523) 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, 326544 + ... + 326806.

It is an arithmetic number, because the mean of its divisors is an integer number (4542120).

Almost surely, 2^85915525 is an apocalyptic number.

It is an amenable number.

85915525 is a deficient number, since it is larger than the sum of its proper divisors (23095355).

85915525 is a wasteful number, since it uses less digits than its factorization.

85915525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 520 counting only the distinct ones).

The product of its digits is 90000, while the sum is 40.

The square root of 85915525 is about 9269.0627897323. The cubic root of 85915525 is about 441.2559244524.

It can be divided in two parts, 859 and 15525, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 85915525 in words is "eighty-five million, nine hundred fifteen thousand, five hundred twenty-five".