22813265 has 4 divisors (see below), whose sum is σ = 27375924. Its totient is φ = 18250608.

The previous prime is 22813247. The next prime is 22813277. The reversal of 22813265 is 56231822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15673681 + 7139584 = 3959^2 + 2672^2 .

It is a cyclic number.

It is not a de Polignac number, because 22813265 - 2⁸ = 22813009 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 2281322 + ... + 2281331.

It is an arithmetic number, because the mean of its divisors is an integer number (6843981).

Almost surely, 2^22813265 is an apocalyptic number.

It is an amenable number.

22813265 is a deficient number, since it is larger than the sum of its proper divisors (4562659).

22813265 is an equidigital number, since it uses as much as digits as its factorization.

22813265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562658.

The product of its digits is 5760, while the sum is 29.

The square root of 22813265 is about 4776.3233768245. The cubic root of 22813265 is about 283.6149687101.

The spelling of 22813265 in words is "twenty-two million, eight hundred thirteen thousand, two hundred sixty-five".