85525528 has 64 divisors (see below), whose sum is σ = 182891520. Its totient is φ = 37142400.

The previous prime is 85525511. The next prime is 85525547. The reversal of 85525528 is 82552558.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291750 + ... + 292042.

It is an arithmetic number, because the mean of its divisors is an integer number (2857680).

Almost surely, 2^85525528 is an apocalyptic number.

85525528 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85525528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91445760).

85525528 is an abundant number, since it is smaller than the sum of its proper divisors (97365992).

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

85525528 is a wasteful number, since it uses less digits than its factorization.

85525528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 444 counting only the distinct ones).

The product of its digits is 160000, while the sum is 40.

The square root of 85525528 is about 9248.0012975778. The cubic root of 85525528 is about 440.5872461860.

The spelling of 85525528 in words is "eighty-five million, five hundred twenty-five thousand, five hundred twenty-eight".