85525236 has 18 divisors (see below), whose sum is σ = 216188882. Its totient is φ = 28508400.

The previous prime is 85525217. The next prime is 85525243. The reversal of 85525236 is 63252558.

It is a happy number.

85525236 is a `hidden beast` number, since 85 + 52 + 523 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 73205136 + 12320100 = 8556^2 + 3510^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2375701 = 85525236 / (8 + 5 + 5 + 2 + 5 + 2 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 85525236.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1187815 + ... + 1187886.

Almost surely, 2^85525236 is an apocalyptic number.

It is an amenable number.

85525236 is an abundant number, since it is smaller than the sum of its proper divisors (130663646).

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

85525236 is a wasteful number, since it uses less digits than its factorization.

85525236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375711 (or 2375706 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 85525236 is about 9247.9855103693. The cubic root of 85525236 is about 440.5867447699.

The spelling of 85525236 in words is "eighty-five million, five hundred twenty-five thousand, two hundred thirty-six".