22500565 has 8 divisors (see below), whose sum is σ = 27027000. Its totient is φ = 17982912.

The previous prime is 22500563. The next prime is 22500581. The reversal of 22500565 is 56500522.

It can be written as a sum of positive squares in 4 ways, for example, as 887364 + 21613201 = 942^2 + 4649^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22500565 - 2¹ = 22500563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22500563) 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, 6811 + ... + 9559.

It is an arithmetic number, because the mean of its divisors is an integer number (3378375).

Almost surely, 2^22500565 is an apocalyptic number.

It is an amenable number.

22500565 is a deficient number, since it is larger than the sum of its proper divisors (4526435).

22500565 is a wasteful number, since it uses less digits than its factorization.

22500565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 22500565 is about 4743.4760461080. The cubic root of 22500565 is about 282.3131716906.

The spelling of 22500565 in words is "twenty-two million, five hundred thousand, five hundred sixty-five".