20955265 has 8 divisors (see below), whose sum is σ = 25171200. Its totient is φ = 16747632.

The previous prime is 20955251. The next prime is 20955293. The reversal of 20955265 is 56255902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20955265 - 2⁹ = 20954753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20955265.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7536 + ... + 9934.

It is an arithmetic number, because the mean of its divisors is an integer number (3146400).

Almost surely, 2^20955265 is an apocalyptic number.

It is an amenable number.

20955265 is a deficient number, since it is larger than the sum of its proper divisors (4215935).

20955265 is a wasteful number, since it uses less digits than its factorization.

20955265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4151.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 20955265 is about 4577.6921041066. The cubic root of 20955265 is about 275.6963728520.

The spelling of 20955265 in words is "twenty million, nine hundred fifty-five thousand, two hundred sixty-five".