256072841 has 2 divisors, whose sum is σ = 256072842. Its totient is φ = 256072840.

The previous prime is 256072807. The next prime is 256072877. The reversal of 256072841 is 148270652.

256072841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255072841 + 1000000 = 15971^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 256072841 - 2²⁶ = 188963977 is a prime.

It is a super-2 number, since 2×256072841² = 131146599795622562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (256072441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128036420 + 128036421.

It is an arithmetic number, because the mean of its divisors is an integer number (128036421).

Almost surely, 2^256072841 is an apocalyptic number.

It is an amenable number.

256072841 is a deficient number, since it is larger than the sum of its proper divisors (1).

256072841 is an equidigital number, since it uses as much as digits as its factorization.

256072841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 256072841 is about 16002.2761193525. The cubic root of 256072841 is about 635.0206379305.

The spelling of 256072841 in words is "two hundred fifty-six million, seventy-two thousand, eight hundred forty-one".