22254565 has 4 divisors (see below), whose sum is σ = 26705484. Its totient is φ = 17803648.

The previous prime is 22254563. The next prime is 22254577. The reversal of 22254565 is 56545222.

It is a happy number.

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 10850436 + 11404129 = 3294^2 + 3377^2 .

It is a cyclic number.

It is not a de Polignac number, because 22254565 - 2¹ = 22254563 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22254563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225452 + ... + 2225461.

It is an arithmetic number, because the mean of its divisors is an integer number (6676371).

Almost surely, 2^22254565 is an apocalyptic number.

It is an amenable number.

22254565 is a deficient number, since it is larger than the sum of its proper divisors (4450919).

22254565 is an equidigital number, since it uses as much as digits as its factorization.

22254565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450918.

The product of its digits is 24000, while the sum is 31.

The square root of 22254565 is about 4717.4744302434. The cubic root of 22254565 is about 281.2805504262.

Adding to 22254565 its reverse (56545222), we get a palindrome (78799787).

The spelling of 22254565 in words is "twenty-two million, two hundred fifty-four thousand, five hundred sixty-five".