256026281 has 16 divisors (see below), whose sum is σ = 297177600. Its totient is φ = 216036288.

The previous prime is 256026259. The next prime is 256026289. The reversal of 256026281 is 182620652.

256026281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 256026281 - 2⁶ = 256026217 is a prime.

It is a super-2 number, since 2×256026281² = 131098913125381922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256026289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360755 + ... + 361463.

It is an arithmetic number, because the mean of its divisors is an integer number (18573600).

Almost surely, 2^256026281 is an apocalyptic number.

It is an amenable number.

256026281 is a deficient number, since it is larger than the sum of its proper divisors (41151319).

256026281 is an equidigital number, since it uses as much as digits as its factorization.

256026281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 256026281 is about 16000.8212601729. The cubic root of 256026281 is about 634.9821484224.

The spelling of 256026281 in words is "two hundred fifty-six million, twenty-six thousand, two hundred eighty-one".