256496254 has 16 divisors (see below), whose sum is σ = 440199648. Its totient is φ = 109804032.

The previous prime is 256496243. The next prime is 256496269. The reversal of 256496254 is 452694652.

It is a self number, because there is not a number n which added to its sum of digits gives 256496254.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3342 + ... + 22894.

It is an arithmetic number, because the mean of its divisors is an integer number (27512478).

Almost surely, 2^256496254 is an apocalyptic number.

256496254 is a deficient number, since it is larger than the sum of its proper divisors (183703394).

256496254 is a wasteful number, since it uses less digits than its factorization.

256496254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20499.

The product of its digits is 518400, while the sum is 43.

The square root of 256496254 is about 16015.5004292716. The cubic root of 256496254 is about 635.3704445637.

The spelling of 256496254 in words is "two hundred fifty-six million, four hundred ninety-six thousand, two hundred fifty-four".