22663265 has 4 divisors (see below), whose sum is σ = 27195924. Its totient is φ = 18130608.

The previous prime is 22663253. The next prime is 22663307. The reversal of 22663265 is 56236622.

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 10601536 + 12061729 = 3256^2 + 3473^2 .

It is a cyclic number.

It is not a de Polignac number, because 22663265 - 2⁸ = 22663009 is a prime.

It is a Duffinian number.

It is a Curzon 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, 2266322 + ... + 2266331.

It is an arithmetic number, because the mean of its divisors is an integer number (6798981).

Almost surely, 2^22663265 is an apocalyptic number.

It is an amenable number.

22663265 is a deficient number, since it is larger than the sum of its proper divisors (4532659).

22663265 is an equidigital number, since it uses as much as digits as its factorization.

22663265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532658.

The product of its digits is 25920, while the sum is 32.

The square root of 22663265 is about 4760.5950258345. The cubic root of 22663265 is about 282.9920003399.

Adding to 22663265 its reverse (56236622), we get a palindrome (78899887).

The spelling of 22663265 in words is "twenty-two million, six hundred sixty-three thousand, two hundred sixty-five".