90106725 has 24 divisors (see below), whose sum is σ = 152615232. Its totient is φ = 46883200.

The previous prime is 90106717. The next prime is 90106787. The reversal of 90106725 is 52760109.

It is not a de Polignac number, because 90106725 - 2³ = 90106717 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 90106692 and 90106701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11577 + ... + 17726.

It is an arithmetic number, because the mean of its divisors is an integer number (6358968).

Almost surely, 2^90106725 is an apocalyptic number.

It is an amenable number.

90106725 is a deficient number, since it is larger than the sum of its proper divisors (62508507).

90106725 is a wasteful number, since it uses less digits than its factorization.

90106725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29357 (or 29352 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 90106725 is about 9492.4562153323. The cubic root of 90106725 is about 448.3175446533.

The spelling of 90106725 in words is "ninety million, one hundred six thousand, seven hundred twenty-five".