22523512261 has 2 divisors, whose sum is σ = 22523512262. Its totient is φ = 22523512260.

The previous prime is 22523512223. The next prime is 22523512307. The reversal of 22523512261 is 16221532522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22351745025 + 171767236 = 149505^2 + 13106^2 .

It is a cyclic number.

It is not a de Polignac number, because 22523512261 - 2⁹ = 22523511749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22523518261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11261756130 + 11261756131.

It is an arithmetic number, because the mean of its divisors is an integer number (11261756131).

Almost surely, 2^22523512261 is an apocalyptic number.

It is an amenable number.

22523512261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22523512261 is an equidigital number, since it uses as much as digits as its factorization.

22523512261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The spelling of 22523512261 in words is "twenty-two billion, five hundred twenty-three million, five hundred twelve thousand, two hundred sixty-one".