25562227561 has 8 divisors (see below), whose sum is σ = 27785830464. Its totient is φ = 23375378640.

The previous prime is 25562227547. The next prime is 25562227583. The reversal of 25562227561 is 16572226552.

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 25562227561 - 2²⁹ = 25025356649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25562227511) 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, 9187045 + ... + 9189826.

It is an arithmetic number, because the mean of its divisors is an integer number (3473228808).

Almost surely, 2^25562227561 is an apocalyptic number.

It is an amenable number.

25562227561 is a deficient number, since it is larger than the sum of its proper divisors (2223602903).

25562227561 is a wasteful number, since it uses less digits than its factorization.

25562227561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18376991.

The product of its digits is 504000, while the sum is 43.

The spelling of 25562227561 in words is "twenty-five billion, five hundred sixty-two million, two hundred twenty-seven thousand, five hundred sixty-one".