12265157309 has 2 divisors, whose sum is σ = 12265157310. Its totient is φ = 12265157308.

The previous prime is 12265157287. The next prime is 12265157321. The reversal of 12265157309 is 90375156221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7340205625 + 4924951684 = 85675^2 + 70178^2 .

It is a cyclic number.

It is not a de Polignac number, because 12265157309 - 2⁸ = 12265157053 is a prime.

It is a super-2 number, since 2×12265157309² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12265157389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6132578654 + 6132578655.

It is an arithmetic number, because the mean of its divisors is an integer number (6132578655).

Almost surely, 2^12265157309 is an apocalyptic number.

It is an amenable number.

12265157309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12265157309 is an equidigital number, since it uses as much as digits as its factorization.

12265157309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 12265157309 in words is "twelve billion, two hundred sixty-five million, one hundred fifty-seven thousand, three hundred nine".