12565361 has 2 divisors, whose sum is σ = 12565362. Its totient is φ = 12565360.

The previous prime is 12565349. The next prime is 12565379. The reversal of 12565361 is 16356521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10144225 + 2421136 = 3185^2 + 1556^2 .

It is an emirp because it is prime and its reverse (16356521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12565361 - 2⁶ = 12565297 is a prime.

It is not a weakly prime, because it can be changed into another prime (12565561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6282680 + 6282681.

It is an arithmetic number, because the mean of its divisors is an integer number (6282681).

Almost surely, 2^12565361 is an apocalyptic number.

It is an amenable number.

12565361 is a deficient number, since it is larger than the sum of its proper divisors (1).

12565361 is an equidigital number, since it uses as much as digits as its factorization.

12565361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 29.

The square root of 12565361 is about 3544.7652954744. The cubic root of 12565361 is about 232.4832438689.

The spelling of 12565361 in words is "twelve million, five hundred sixty-five thousand, three hundred sixty-one".