12565275013 has 2 divisors, whose sum is σ = 12565275014. Its totient is φ = 12565275012.

The previous prime is 12565275001. The next prime is 12565275067. The reversal of 12565275013 is 31057256521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7393076289 + 5172198724 = 85983^2 + 71918^2 .

It is a cyclic number.

It is not a de Polignac number, because 12565275013 - 2¹³ = 12565266821 is a prime.

It is a super-2 number, since 2×12565275013² (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 (12565275083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6282637506 + 6282637507.

It is an arithmetic number, because the mean of its divisors is an integer number (6282637507).

Almost surely, 2^12565275013 is an apocalyptic number.

It is an amenable number.

12565275013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12565275013 is an equidigital number, since it uses as much as digits as its factorization.

12565275013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 12565275013 in words is "twelve billion, five hundred sixty-five million, two hundred seventy-five thousand, thirteen".