22567565 has 4 divisors (see below), whose sum is σ = 27081084. Its totient is φ = 18054048.

The previous prime is 22567553. The next prime is 22567583. The reversal of 22567565 is 56576522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56576522 = 2 ⋅28288261.

It can be written as a sum of positive squares in 2 ways, for example, as 2951524 + 19616041 = 1718^2 + 4429^2 .

It is a cyclic number.

It is not a de Polignac number, because 22567565 - 2⁴ = 22567549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2256752 + ... + 2256761.

It is an arithmetic number, because the mean of its divisors is an integer number (6770271).

Almost surely, 2^22567565 is an apocalyptic number.

It is an amenable number.

22567565 is a deficient number, since it is larger than the sum of its proper divisors (4513519).

22567565 is an equidigital number, since it uses as much as digits as its factorization.

22567565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513518.

The product of its digits is 126000, while the sum is 38.

The square root of 22567565 is about 4750.5331279763. The cubic root of 22567565 is about 282.5931089440.

It can be divided in two parts, 22567 and 565, that added together give a palindrome (23132).

The spelling of 22567565 in words is "twenty-two million, five hundred sixty-seven thousand, five hundred sixty-five".