22525656427 has 4 divisors (see below), whose sum is σ = 22526365576. Its totient is φ = 22524947280.

The previous prime is 22525656403. The next prime is 22525656431. The reversal of 22525656427 is 72465652522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22525656427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22525656437) 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, 304578 + ... + 371239.

It is an arithmetic number, because the mean of its divisors is an integer number (5631591394).

Almost surely, 2^22525656427 is an apocalyptic number.

22525656427 is a deficient number, since it is larger than the sum of its proper divisors (709149).

22525656427 is an equidigital number, since it uses as much as digits as its factorization.

22525656427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709148.

The product of its digits is 2016000, while the sum is 46.

The spelling of 22525656427 in words is "twenty-two billion, five hundred twenty-five million, six hundred fifty-six thousand, four hundred twenty-seven".