90579825 has 108 divisors (see below), whose sum is σ = 197953600. Its totient is φ = 38776320.

The previous prime is 90579823. The next prime is 90579851. The reversal of 90579825 is 52897509.

It is a happy number.

It is not a de Polignac number, because 90579825 - 2¹ = 90579823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90579823) 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 107 ways as a sum of consecutive naturals, for example, 455076 + ... + 455274.

Almost surely, 2^90579825 is an apocalyptic number.

It is an amenable number.

90579825 is an abundant number, since it is smaller than the sum of its proper divisors (107373775).

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

90579825 is a wasteful number, since it uses less digits than its factorization.

90579825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 90579825 is about 9517.3433793260. The cubic root of 90579825 is about 449.1007969759.

The spelling of 90579825 in words is "ninety million, five hundred seventy-nine thousand, eight hundred twenty-five".