12630646225 has 12 divisors (see below), whose sum is σ = 16202071260. Its totient is φ = 9756084800.

The previous prime is 12630646219. The next prime is 12630646289. The reversal of 12630646225 is 52264603621.

It can be written as a sum of positive squares in 6 ways, for example, as 48986001 + 12581660224 = 6999^2 + 112168^2 .

It is not a de Polignac number, because 12630646225 - 2²³ = 12622257617 is a prime.

It is a super-2 number, since 2×12630646225² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8710066 + ... + 8711515.

It is an arithmetic number, because the mean of its divisors is an integer number (1350172605).

Almost surely, 2^12630646225 is an apocalyptic number.

It is an amenable number.

12630646225 is a deficient number, since it is larger than the sum of its proper divisors (3571425035).

12630646225 is a wasteful number, since it uses less digits than its factorization.

12630646225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17421620 (or 17421615 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 12630646225 in words is "twelve billion, six hundred thirty million, six hundred forty-six thousand, two hundred twenty-five".