90858125 has 20 divisors (see below), whose sum is σ = 116634540. Its totient is φ = 70704000.

The previous prime is 90858113. The next prime is 90858143. The reversal of 90858125 is 52185809.

It can be written as a sum of positive squares in 10 ways, for example, as 67683529 + 23174596 = 8227^2 + 4814^2 .

It is not a de Polignac number, because 90858125 - 2⁴ = 90858109 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21161 + ... + 25089.

It is an arithmetic number, because the mean of its divisors is an integer number (5831727).

Almost surely, 2^90858125 is an apocalyptic number.

It is an amenable number.

90858125 is a deficient number, since it is larger than the sum of its proper divisors (25776415).

90858125 is an equidigital number, since it uses as much as digits as its factorization.

90858125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986 (or 3971 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 90858125 is about 9531.9528429383. The cubic root of 90858125 is about 449.5602700341.

The spelling of 90858125 in words is "ninety million, eight hundred fifty-eight thousand, one hundred twenty-five".