12625403666 has 16 divisors (see below), whose sum is σ = 19557255168. Its totient is φ = 6106490400.

The previous prime is 12625403653. The next prime is 12625403683. The reversal of 12625403666 is 66630452621.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109631 + ... + 193053.

It is an arithmetic number, because the mean of its divisors is an integer number (1222328448).

Almost surely, 2^12625403666 is an apocalyptic number.

12625403666 is a deficient number, since it is larger than the sum of its proper divisors (6931851502).

12625403666 is a wasteful number, since it uses less digits than its factorization.

12625403666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85897.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 12625403666 in words is "twelve billion, six hundred twenty-five million, four hundred three thousand, six hundred sixty-six".