12563256325 has 12 divisors (see below), whose sum is σ = 15585545988. Its totient is φ = 10046019200.

The previous prime is 12563256317. The next prime is 12563256359. The reversal of 12563256325 is 52365236521.

It can be written as a sum of positive squares in 6 ways, for example, as 8726116 + 12554530209 = 2954^2 + 112047^2 .

It is not a de Polignac number, because 12563256325 - 2³ = 12563256317 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent 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, 58216 + ... + 168865.

It is an arithmetic number, because the mean of its divisors is an integer number (1298795499).

Almost surely, 2^12563256325 is an apocalyptic number.

It is an amenable number.

12563256325 is a deficient number, since it is larger than the sum of its proper divisors (3022289663).

12563256325 is a wasteful number, since it uses less digits than its factorization.

12563256325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229304 (or 229299 counting only the distinct ones).

The product of its digits is 324000, while the sum is 40.

The spelling of 12563256325 in words is "twelve billion, five hundred sixty-three million, two hundred fifty-six thousand, three hundred twenty-five".