22480565 has 4 divisors (see below), whose sum is σ = 26976684. Its totient is φ = 17984448.

The previous prime is 22480543. The next prime is 22480567. The reversal of 22480565 is 56508422.

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 2961841 + 19518724 = 1721^2 + 4418^2 .

It is a cyclic number.

It is not a de Polignac number, because 22480565 - 2⁶ = 22480501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22480567) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2248052 + ... + 2248061.

It is an arithmetic number, because the mean of its divisors is an integer number (6744171).

Almost surely, 2^22480565 is an apocalyptic number.

It is an amenable number.

22480565 is a deficient number, since it is larger than the sum of its proper divisors (4496119).

22480565 is an equidigital number, since it uses as much as digits as its factorization.

22480565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496118.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 22480565 is about 4741.3674187939. The cubic root of 22480565 is about 282.2295006481.

Adding to 22480565 its reverse (56508422), we get a palindrome (78988987).

The spelling of 22480565 in words is "twenty-two million, four hundred eighty thousand, five hundred sixty-five".