12565257145 has 16 divisors (see below), whose sum is σ = 17342120448. Its totient is φ = 8561292480.

The previous prime is 12565257139. The next prime is 12565257149. The reversal of 12565257145 is 54175256521.

It is not a de Polignac number, because 12565257145 - 2¹⁵ = 12565224377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12565257149) 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, 1137841 + ... + 1148830.

It is an arithmetic number, because the mean of its divisors is an integer number (1083882528).

Almost surely, 2^12565257145 is an apocalyptic number.

It is an amenable number.

12565257145 is a deficient number, since it is larger than the sum of its proper divisors (4776863303).

12565257145 is a wasteful number, since it uses less digits than its factorization.

12565257145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286840.

The product of its digits is 420000, while the sum is 43.

The spelling of 12565257145 in words is "twelve billion, five hundred sixty-five million, two hundred fifty-seven thousand, one hundred forty-five".