12525512565 has 16 divisors (see below), whose sum is σ = 20050145856. Its totient is φ = 6677164800.

The previous prime is 12525512561. The next prime is 12525512567. The reversal of 12525512565 is 56521552521.

It is not a de Polignac number, because 12525512565 - 2² = 12525512561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12525512561) 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, 160791 + ... + 225620.

It is an arithmetic number, because the mean of its divisors is an integer number (1253134116).

Almost surely, 2^12525512565 is an apocalyptic number.

12525512565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12525512565 is a deficient number, since it is larger than the sum of its proper divisors (7524633291).

12525512565 is a wasteful number, since it uses less digits than its factorization.

12525512565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388580.

The product of its digits is 150000, while the sum is 39.

The spelling of 12525512565 in words is "twelve billion, five hundred twenty-five million, five hundred twelve thousand, five hundred sixty-five".