12513525044 has 6 divisors (see below), whose sum is σ = 21898668834. Its totient is φ = 6256762520.

The previous prime is 12513525043. The next prime is 12513525067. The reversal of 12513525044 is 44052531521.

It can be written as a sum of positive squares in only one way, i.e., 6462552100 + 6050972944 = 80390^2 + 77788^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12513525044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513525043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564190627 + ... + 1564190634.

It is an arithmetic number, because the mean of its divisors is an integer number (3649778139).

Almost surely, 2^12513525044 is an apocalyptic number.

It is an amenable number.

12513525044 is a deficient number, since it is larger than the sum of its proper divisors (9385143790).

12513525044 is a wasteful number, since it uses less digits than its factorization.

12513525044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128381265 (or 3128381263 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 12513525044 in words is "twelve billion, five hundred thirteen million, five hundred twenty-five thousand, forty-four".