256175001 has 8 divisors (see below), whose sum is σ = 379518560. Its totient is φ = 170783316.

The previous prime is 256174993. The next prime is 256175033. The reversal of 256175001 is 100571652.

It is not a de Polignac number, because 256175001 - 2³ = 256174993 is a prime.

It is a super-2 number, since 2×256175001² = 131251262274700002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9487963 = 256175001 / (2 + 5 + 6 + 1 + 7 + 5 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256175071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4743955 + ... + 4744008.

It is an arithmetic number, because the mean of its divisors is an integer number (47439820).

Almost surely, 2^256175001 is an apocalyptic number.

It is an amenable number.

256175001 is a deficient number, since it is larger than the sum of its proper divisors (123343559).

256175001 is an equidigital number, since it uses as much as digits as its factorization.

256175001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9487972 (or 9487966 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 256175001 is about 16005.4678469578. The cubic root of 256175001 is about 635.1050736493.

The spelling of 256175001 in words is "two hundred fifty-six million, one hundred seventy-five thousand, one".