312660012225 has 192 divisors, whose sum is σ = 637575763968. Its totient is φ = 133292544000.

The previous prime is 312660012187. The next prime is 312660012227. The reversal of 312660012225 is 522210066213.

It is not a de Polignac number, because 312660012225 - 2⁷ = 312660012097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312660012192 and 312660012201.

It is not an unprimeable number, because it can be changed into a prime (312660012227) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 13859455 + ... + 13881995.

It is an arithmetic number, because the mean of its divisors is an integer number (3320707104).

Almost surely, 2^312660012225 is an apocalyptic number.

It is an amenable number.

312660012225 is an abundant number, since it is smaller than the sum of its proper divisors (324915751743).

312660012225 is a wasteful number, since it uses less digits than its factorization.

312660012225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22648 (or 22643 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 312660012225 its reverse (522210066213), we get a palindrome (834870078438).

The spelling of 312660012225 in words is "three hundred twelve billion, six hundred sixty million, twelve thousand, two hundred twenty-five".