90925 has 6 divisors (see below), whose sum is σ = 112778. Its totient is φ = 72720.

The previous prime is 90917. The next prime is 90931. The reversal of 90925 is 52909.

It can be written as a sum of positive squares in 3 ways, for example, as 324 + 90601 = 18^2 + 301^2 .

It is a sliding number, since 90925 = 12800 + 78125 and 1/12800 + 1/78125 = 0.000090925.

It is not a de Polignac number, because 90925 - 2³ = 90917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 3637 = 90925 / (9 + 0 + 9 + 2 + 5).

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1794 + ... + 1843.

2⁹⁰⁹²⁵ is an apocalyptic number.

It is an amenable number.

90925 is a deficient number, since it is larger than the sum of its proper divisors (21853).

90925 is a wasteful number, since it uses less digits than its factorization.

90925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647 (or 3642 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 90925 is about 301.5377256663. The cubic root of 90925 is about 44.9670540744.

The spelling of 90925 in words is "ninety thousand, nine hundred twenty-five".