90852525 has 36 divisors (see below), whose sum is σ = 163519668. Its totient is φ = 48218880.

The previous prime is 90852521. The next prime is 90852527. The reversal of 90852525 is 52525809.

It can be written as a sum of positive squares in 6 ways, for example, as 9474084 + 81378441 = 3078^2 + 9021^2 .

It is not a de Polignac number, because 90852525 - 2² = 90852521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90852525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90852521) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 51559 + ... + 53291.

It is an arithmetic number, because the mean of its divisors is an integer number (4542213).

Almost surely, 2^90852525 is an apocalyptic number.

It is an amenable number.

90852525 is a deficient number, since it is larger than the sum of its proper divisors (72667143).

90852525 is a wasteful number, since it uses less digits than its factorization.

90852525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 1974 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 90852525 is about 9531.6590895814. The cubic root of 90852525 is about 449.5510336955.

The spelling of 90852525 in words is "ninety million, eight hundred fifty-two thousand, five hundred twenty-five".