22163265 has 24 divisors (see below), whose sum is σ = 38995008. Its totient is φ = 11642400.

The previous prime is 22163263. The next prime is 22163299. The reversal of 22163265 is 56236122.

22163265 is a `hidden beast` number, since 2 + 21 + 632 + 6 + 5 = 666.

It is not a de Polignac number, because 22163265 - 2¹ = 22163263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22163261) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 661 + ... + 6690.

It is an arithmetic number, because the mean of its divisors is an integer number (1624792).

Almost surely, 2^22163265 is an apocalyptic number.

It is an amenable number.

22163265 is a deficient number, since it is larger than the sum of its proper divisors (16831743).

22163265 is a wasteful number, since it uses less digits than its factorization.

22163265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7429 (or 7426 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 22163265 is about 4707.7876969974. The cubic root of 22163265 is about 280.8953693272.

Adding to 22163265 its reverse (56236122), we get a palindrome (78399387).

The spelling of 22163265 in words is "twenty-two million, one hundred sixty-three thousand, two hundred sixty-five".