85533525 has 72 divisors (see below), whose sum is σ = 191041344. Its totient is φ = 35539200.

The previous prime is 85533517. The next prime is 85533631. The reversal of 85533525 is 52533558.

85533525 is a `hidden beast` number, since 85 + 53 + 3 + 525 = 666.

It is not a de Polignac number, because 85533525 - 2³ = 85533517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85533525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14857 + ... + 19793.

It is an arithmetic number, because the mean of its divisors is an integer number (2653352).

Almost surely, 2^85533525 is an apocalyptic number.

It is an amenable number.

85533525 is an abundant number, since it is smaller than the sum of its proper divisors (105507819).

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

85533525 is a wasteful number, since it uses less digits than its factorization.

85533525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971 (or 4963 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 85533525 is about 9248.4336511649. The cubic root of 85533525 is about 440.6009780174.

The spelling of 85533525 in words is "eighty-five million, five hundred thirty-three thousand, five hundred twenty-five".