656230231225 has 24 divisors (see below), whose sum is σ = 824296670208. Its totient is φ = 518206046400.

The previous prime is 656230231213. The next prime is 656230231303. The reversal of 656230231225 is 522132032656.

It is not a de Polignac number, because 656230231225 - 2⁹ = 656230230713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100890 + ... + 1150060.

It is an arithmetic number, because the mean of its divisors is an integer number (34345694592).

Almost surely, 2^656230231225 is an apocalyptic number.

It is an amenable number.

656230231225 is a deficient number, since it is larger than the sum of its proper divisors (168066438983).

656230231225 is a wasteful number, since it uses less digits than its factorization.

656230231225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049505 (or 1049500 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 656230231225 in words is "six hundred fifty-six billion, two hundred thirty million, two hundred thirty-one thousand, two hundred twenty-five".