85725528 has 32 divisors (see below), whose sum is σ = 244930560. Its totient is φ = 24492960.

The previous prime is 85725503. The next prime is 85725533. The reversal of 85725528 is 82552758.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 85725528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254968 + ... + 255303.

It is an arithmetic number, because the mean of its divisors is an integer number (7654080).

Almost surely, 2^85725528 is an apocalyptic number.

It is an amenable number.

85725528 is an abundant number, since it is smaller than the sum of its proper divisors (159205032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85725528 is a wasteful number, since it uses less digits than its factorization.

85725528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510287 (or 510283 counting only the distinct ones).

The product of its digits is 224000, while the sum is 42.

The square root of 85725528 is about 9258.8081306397. The cubic root of 85725528 is about 440.9304141006.

The spelling of 85725528 in words is "eighty-five million, seven hundred twenty-five thousand, five hundred twenty-eight".