12663320625 has 40 divisors (see below), whose sum is σ = 23443120800. Its totient is φ = 6753762000.

The previous prime is 12663320599. The next prime is 12663320653. The reversal of 12663320625 is 52602336621.

12663320625 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 3 + 3 + 20 + 625 = 666.

12663320625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12663320625 - 2⁹ = 12663320113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12663320625.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 358335 + ... + 392084.

It is an arithmetic number, because the mean of its divisors is an integer number (586078020).

Almost surely, 2^12663320625 is an apocalyptic number.

12663320625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12663320625 is a deficient number, since it is larger than the sum of its proper divisors (10779800175).

12663320625 is an frugal number, since it uses more digits than its factorization.

12663320625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750448 (or 750427 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 12663320625 in words is "twelve billion, six hundred sixty-three million, three hundred twenty thousand, six hundred twenty-five".