256880003 has 4 divisors (see below), whose sum is σ = 256927848. Its totient is φ = 256832160.

The previous prime is 256879991. The next prime is 256880009. The reversal of 256880003 is 300088652.

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 256880003 - 2¹² = 256875907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256880009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14678 + ... + 27003.

It is an arithmetic number, because the mean of its divisors is an integer number (64231962).

Almost surely, 2^256880003 is an apocalyptic number.

256880003 is a deficient number, since it is larger than the sum of its proper divisors (47845).

256880003 is an equidigital number, since it uses as much as digits as its factorization.

256880003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47844.

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

The square root of 256880003 is about 16027.4765013086. The cubic root of 256880003 is about 635.6871500047.

The spelling of 256880003 in words is "two hundred fifty-six million, eight hundred eighty thousand, three".