22563185261 has 2 divisors, whose sum is σ = 22563185262. Its totient is φ = 22563185260.

The previous prime is 22563185243. The next prime is 22563185279. The reversal of 22563185261 is 16258136522.

It is a balanced prime because it is at equal distance from previous prime (22563185243) and next prime (22563185279).

It can be written as a sum of positive squares in only one way, i.e., 22084932100 + 478253161 = 148610^2 + 21869^2 .

It is a cyclic number.

It is not a de Polignac number, because 22563185261 - 2¹⁴ = 22563168877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22563185461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11281592630 + 11281592631.

It is an arithmetic number, because the mean of its divisors is an integer number (11281592631).

Almost surely, 2^22563185261 is an apocalyptic number.

It is an amenable number.

22563185261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22563185261 is an equidigital number, since it uses as much as digits as its factorization.

22563185261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 41.

The spelling of 22563185261 in words is "twenty-two billion, five hundred sixty-three million, one hundred eighty-five thousand, two hundred sixty-one".