255426403 has 4 divisors (see below), whose sum is σ = 264234240. Its totient is φ = 246618568.

The previous prime is 255426397. The next prime is 255426421. The reversal of 255426403 is 304624552.

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 255426403 - 2²⁵ = 221871971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255426463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4403875 + ... + 4403932.

It is an arithmetic number, because the mean of its divisors is an integer number (66058560).

Almost surely, 2^255426403 is an apocalyptic number.

255426403 is a deficient number, since it is larger than the sum of its proper divisors (8807837).

255426403 is an equidigital number, since it uses as much as digits as its factorization.

255426403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8807836.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 255426403 is about 15982.0650417898. The cubic root of 255426403 is about 634.4858325704.

The spelling of 255426403 in words is "two hundred fifty-five million, four hundred twenty-six thousand, four hundred three".