12565849227 has 16 divisors (see below), whose sum is σ = 16895262720. Its totient is φ = 8306979552.

The previous prime is 12565849151. The next prime is 12565849271. The reversal of 12565849227 is 72294856521.

It is not a de Polignac number, because 12565849227 - 2¹⁴ = 12565832843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12565849227.

It is not an unprimeable number, because it can be changed into a prime (12565849297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338038 + ... + 373364.

It is an arithmetic number, because the mean of its divisors is an integer number (1055953920).

Almost surely, 2^12565849227 is an apocalyptic number.

12565849227 is a deficient number, since it is larger than the sum of its proper divisors (4329413493).

12565849227 is a wasteful number, since it uses less digits than its factorization.

12565849227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36322.

The product of its digits is 2419200, while the sum is 51.

The spelling of 12565849227 in words is "twelve billion, five hundred sixty-five million, eight hundred forty-nine thousand, two hundred twenty-seven".