16580925 has 18 divisors (see below), whose sum is σ = 29698682. Its totient is φ = 8843040.

The previous prime is 16580917. The next prime is 16580951. The reversal of 16580925 is 52908561.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 492804 + 16088121 = 702^2 + 4011^2 .

It is not a de Polignac number, because 16580925 - 2³ = 16580917 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 16580925.

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 17 ways as a sum of consecutive naturals, for example, 36622 + ... + 37071.

Almost surely, 2^16580925 is an apocalyptic number.

16580925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16580925 is a deficient number, since it is larger than the sum of its proper divisors (13117757).

16580925 is a wasteful number, since it uses less digits than its factorization.

16580925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73709 (or 73701 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 16580925 is about 4071.9681973218. The cubic root of 16580925 is about 254.9976931741.

The spelling of 16580925 in words is "sixteen million, five hundred eighty thousand, nine hundred twenty-five".