256325863047 has 4 divisors (see below), whose sum is σ = 341767817400. Its totient is φ = 170883908696.

The previous prime is 256325863039. The next prime is 256325863109. The reversal of 256325863047 is 740368523652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256325863047 - 2³ = 256325863039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256325863747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42720977172 + ... + 42720977177.

It is an arithmetic number, because the mean of its divisors is an integer number (85441954350).

Almost surely, 2^256325863047 is an apocalyptic number.

256325863047 is a deficient number, since it is larger than the sum of its proper divisors (85441954353).

256325863047 is an equidigital number, since it uses as much as digits as its factorization.

256325863047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85441954352.

The product of its (nonzero) digits is 7257600, while the sum is 51.

The spelling of 256325863047 in words is "two hundred fifty-six billion, three hundred twenty-five million, eight hundred sixty-three thousand, forty-seven".