309315628225 has 12 divisors (see below), whose sum is σ = 400227526656. Its totient is φ = 236693697680.

The previous prime is 309315628163. The next prime is 309315628277. The reversal of 309315628225 is 522826513903.

It is a happy number.

It is not a de Polignac number, because 309315628225 - 2³³ = 300725693633 is a prime.

It is a Duffinian number.

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, 268969537 + ... + 268970686.

It is an arithmetic number, because the mean of its divisors is an integer number (33352293888).

Almost surely, 2^309315628225 is an apocalyptic number.

It is an amenable number.

309315628225 is a deficient number, since it is larger than the sum of its proper divisors (90911898431).

309315628225 is a wasteful number, since it uses less digits than its factorization.

309315628225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537940256 (or 537940251 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 309315628225 in words is "three hundred nine billion, three hundred fifteen million, six hundred twenty-eight thousand, two hundred twenty-five".