625656906250 has 28 divisors (see below), whose sum is σ = 1173091742046. Its totient is φ = 250262750000.

The previous prime is 625656906227. The next prime is 625656906269. The reversal of 625656906250 is 52609656526.

It can be written as a sum of positive squares in 7 ways, for example, as 270153576169 + 355503330081 = 519763^2 + 596241^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 9979261 + ... + 10041760.

Almost surely, 2^625656906250 is an apocalyptic number.

625656906250 is a deficient number, since it is larger than the sum of its proper divisors (547434835796).

625656906250 is an frugal number, since it uses more digits than its factorization.

625656906250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20021053 (or 20021028 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 52.

The spelling of 625656906250 in words is "six hundred twenty-five billion, six hundred fifty-six million, nine hundred six thousand, two hundred fifty".