256258843 has 4 divisors (see below), whose sum is σ = 256295880. Its totient is φ = 256221808.

The previous prime is 256258837. The next prime is 256258861. The reversal of 256258843 is 348852652.

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 256258843 - 2²⁵ = 222704411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256258843.

It is not an unprimeable number, because it can be changed into a prime (256258813) 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, 4705 + ... + 23122.

It is an arithmetic number, because the mean of its divisors is an integer number (64073970).

Almost surely, 2^256258843 is an apocalyptic number.

256258843 is a deficient number, since it is larger than the sum of its proper divisors (37037).

256258843 is an equidigital number, since it uses as much as digits as its factorization.

256258843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37036.

The product of its digits is 460800, while the sum is 43.

The square root of 256258843 is about 16008.0868001145. The cubic root of 256258843 is about 635.1743526855.

The spelling of 256258843 in words is "two hundred fifty-six million, two hundred fifty-eight thousand, eight hundred forty-three".