12565271275 has 24 divisors (see below), whose sum is σ = 15832922144. Its totient is φ = 9890899200.

The previous prime is 12565271269. The next prime is 12565271287. The reversal of 12565271275 is 57217256521.

It is a de Polignac number, because none of the positive numbers 2^k-12565271275 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388735 + ... + 419815.

Almost surely, 2^12565271275 is an apocalyptic number.

12565271275 is a deficient number, since it is larger than the sum of its proper divisors (3267650869).

12565271275 is a wasteful number, since it uses less digits than its factorization.

12565271275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31351 (or 31346 counting only the distinct ones).

The product of its digits is 294000, while the sum is 43.

The spelling of 12565271275 in words is "twelve billion, five hundred sixty-five million, two hundred seventy-one thousand, two hundred seventy-five".