256870757075 has 12 divisors (see below), whose sum is σ = 318528394128. Its totient is φ = 205491021600.

The previous prime is 256870757071. The next prime is 256870757093. The reversal of 256870757075 is 570757078652.

It is not a de Polignac number, because 256870757075 - 2² = 256870757071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256870757071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 972530 + ... + 1208120.

It is an arithmetic number, because the mean of its divisors is an integer number (26544032844).

Almost surely, 2^256870757075 is an apocalyptic number.

256870757075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256870757075 is a deficient number, since it is larger than the sum of its proper divisors (61657637053).

256870757075 is a wasteful number, since it uses less digits than its factorization.

256870757075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279214 (or 279209 counting only the distinct ones).

The product of its (nonzero) digits is 28812000, while the sum is 59.

The spelling of 256870757075 in words is "two hundred fifty-six billion, eight hundred seventy million, seven hundred fifty-seven thousand, seventy-five".