85725504 has 42 divisors (see below), whose sum is σ = 245718330. Its totient is φ = 28574976.

The previous prime is 85725503. The next prime is 85725533. The reversal of 85725504 is 40552758.

It is a happy number.

85725504 is a `hidden beast` number, since 85 + 72 + 5 + 504 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51151104 + 34574400 = 7152^2 + 5880^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85725503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73839 + ... + 74990.

Almost surely, 2^85725504 is an apocalyptic number.

It is an amenable number.

85725504 is an abundant number, since it is smaller than the sum of its proper divisors (159992826).

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

85725504 is a wasteful number, since it uses less digits than its factorization.

85725504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148847 (or 148834 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 85725504 is about 9258.8068345765. The cubic root of 85725504 is about 440.9303729525.

The spelling of 85725504 in words is "eighty-five million, seven hundred twenty-five thousand, five hundred four".