22527645065 has 4 divisors (see below), whose sum is σ = 27033174084. Its totient is φ = 18022116048.

The previous prime is 22527645061. The next prime is 22527645097. The reversal of 22527645065 is 56054672522.

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 11343102016 + 11184543049 = 106504^2 + 105757^2 .

It is a cyclic number.

It is not a de Polignac number, because 22527645065 - 2² = 22527645061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22527645061) 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, 2252764502 + ... + 2252764511.

It is an arithmetic number, because the mean of its divisors is an integer number (6758293521).

Almost surely, 2^22527645065 is an apocalyptic number.

It is an amenable number.

22527645065 is a deficient number, since it is larger than the sum of its proper divisors (4505529019).

22527645065 is an equidigital number, since it uses as much as digits as its factorization.

22527645065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505529018.

The product of its (nonzero) digits is 1008000, while the sum is 44.

The spelling of 22527645065 in words is "twenty-two billion, five hundred twenty-seven million, six hundred forty-five thousand, sixty-five".