256255544 has 24 divisors (see below), whose sum is σ = 483910560. Its totient is φ = 127216656.

The previous prime is 256255537. The next prime is 256255547. The reversal of 256255544 is 445552652.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 256255498 and 256255507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256255547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 675947 + ... + 676325.

It is an arithmetic number, because the mean of its divisors is an integer number (20162940).

Almost surely, 2^256255544 is an apocalyptic number.

It is an amenable number.

256255544 is a deficient number, since it is larger than the sum of its proper divisors (227655016).

256255544 is an equidigital number, since it uses as much as digits as its factorization.

256255544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 604 counting only the distinct ones).

The product of its digits is 240000, while the sum is 38.

The square root of 256255544 is about 16007.9837581127. The cubic root of 256255544 is about 635.1716269920.

The spelling of 256255544 in words is "two hundred fifty-six million, two hundred fifty-five thousand, five hundred forty-four".