90858525 has 24 divisors (see below), whose sum is σ = 152772960. Its totient is φ = 47634240.

The previous prime is 90858511. The next prime is 90858529. The reversal of 90858525 is 52585809.

It is not a de Polignac number, because 90858525 - 2⁶ = 90858461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90858529) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 5842 + ... + 14691.

It is an arithmetic number, because the mean of its divisors is an integer number (6365540).

Almost surely, 2^90858525 is an apocalyptic number.

It is an amenable number.

90858525 is a deficient number, since it is larger than the sum of its proper divisors (61914435).

90858525 is a wasteful number, since it uses less digits than its factorization.

90858525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20605 (or 20600 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 42.

The square root of 90858525 is about 9531.9738249746. The cubic root of 90858525 is about 449.5609297581.

The spelling of 90858525 in words is "ninety million, eight hundred fifty-eight thousand, five hundred twenty-five".