12265332809 has 2 divisors, whose sum is σ = 12265332810. Its totient is φ = 12265332808.

The previous prime is 12265332791. The next prime is 12265332829. The reversal of 12265332809 is 90823356221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8274631225 + 3990701584 = 90965^2 + 63172^2 .

It is a cyclic number.

It is not a de Polignac number, because 12265332809 - 2²⁰ = 12264284233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12265332829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6132666404 + 6132666405.

It is an arithmetic number, because the mean of its divisors is an integer number (6132666405).

Almost surely, 2^12265332809 is an apocalyptic number.

It is an amenable number.

12265332809 is a deficient number, since it is larger than the sum of its proper divisors (1).

12265332809 is an equidigital number, since it uses as much as digits as its factorization.

12265332809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 12265332809 in words is "twelve billion, two hundred sixty-five million, three hundred thirty-two thousand, eight hundred nine".