12660025523 has 4 divisors (see below), whose sum is σ = 12661366128. Its totient is φ = 12658684920.

The previous prime is 12660025517. The next prime is 12660025529. The reversal of 12660025523 is 32552006621.

12660025523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12660025517) and next prime (12660025529).

It is a cyclic number.

It is not a de Polignac number, because 12660025523 - 2²⁰ = 12658976947 is a prime.

It is a super-2 number, since 2×12660025523² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12660025523.

It is not an unprimeable number, because it can be changed into a prime (12660025529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656036 + ... + 675057.

It is an arithmetic number, because the mean of its divisors is an integer number (3165341532).

Almost surely, 2^12660025523 is an apocalyptic number.

12660025523 is a deficient number, since it is larger than the sum of its proper divisors (1340605).

12660025523 is an equidigital number, since it uses as much as digits as its factorization.

12660025523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340604.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 12660025523 in words is "twelve billion, six hundred sixty million, twenty-five thousand, five hundred twenty-three".