12566335253 has 4 divisors (see below), whose sum is σ = 12566663820. Its totient is φ = 12566006688.

The previous prime is 12566335231. The next prime is 12566335259. The reversal of 12566335253 is 35253366521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4510734244 + 8055601009 = 67162^2 + 89753^2 .

It is a cyclic number.

It is not a de Polignac number, because 12566335253 - 2⁶ = 12566335189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12566335253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12566335259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98000 + ... + 186377.

It is an arithmetic number, because the mean of its divisors is an integer number (3141665955).

Almost surely, 2^12566335253 is an apocalyptic number.

It is an amenable number.

12566335253 is a deficient number, since it is larger than the sum of its proper divisors (328567).

12566335253 is an equidigital number, since it uses as much as digits as its factorization.

12566335253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328566.

The product of its digits is 486000, while the sum is 41.

The spelling of 12566335253 in words is "twelve billion, five hundred sixty-six million, three hundred thirty-five thousand, two hundred fifty-three".