22645265 has 8 divisors (see below), whose sum is σ = 27229608. Its totient is φ = 18079360.

The previous prime is 22645247. The next prime is 22645267. The reversal of 22645265 is 56254622.

It can be written as a sum of positive squares in 4 ways, for example, as 101761 + 22543504 = 319^2 + 4748^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22645265 - 2⁸ = 22645009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22645267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1742 + ... + 6951.

It is an arithmetic number, because the mean of its divisors is an integer number (3403701).

Almost surely, 2^22645265 is an apocalyptic number.

It is an amenable number.

22645265 is a deficient number, since it is larger than the sum of its proper divisors (4584343).

22645265 is an equidigital number, since it uses as much as digits as its factorization.

22645265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9219.

The product of its digits is 28800, while the sum is 32.

The square root of 22645265 is about 4758.7041303279. The cubic root of 22645265 is about 282.9170596054.

Adding to 22645265 its reverse (56254622), we get a palindrome (78899887).

The spelling of 22645265 in words is "twenty-two million, six hundred forty-five thousand, two hundred sixty-five".