12943965525 has 24 divisors (see below), whose sum is σ = 22091038464. Its totient is φ = 6680755200.

The previous prime is 12943965521. The next prime is 12943965533. The reversal of 12943965525 is 52556934921.

It is not a de Polignac number, because 12943965525 - 2² = 12943965521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12943965521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2781324 + ... + 2785973.

It is an arithmetic number, because the mean of its divisors is an integer number (920459936).

Almost surely, 2^12943965525 is an apocalyptic number.

12943965525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12943965525 is a deficient number, since it is larger than the sum of its proper divisors (9147072939).

12943965525 is a wasteful number, since it uses less digits than its factorization.

12943965525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567341 (or 5567336 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 51.

It can be divided in two parts, 1294396 and 5525, that added together give a palindrome (1299921).

The spelling of 12943965525 in words is "twelve billion, nine hundred forty-three million, nine hundred sixty-five thousand, five hundred twenty-five".