256575250 has 32 divisors (see below), whose sum is σ = 482017536. Its totient is φ = 102265200.

The previous prime is 256575233. The next prime is 256575269. The reversal of 256575250 is 52575652.

It is a happy number.

256575250 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 75079 + ... + 78421.

It is an arithmetic number, because the mean of its divisors is an integer number (15063048).

Almost surely, 2^256575250 is an apocalyptic number.

256575250 is a deficient number, since it is larger than the sum of its proper divisors (225442286).

256575250 is a wasteful number, since it uses less digits than its factorization.

256575250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667 (or 3657 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 37.

The square root of 256575250 is about 16017.9664751803. The cubic root of 256575250 is about 635.4356652327.

It can be divided in two parts, 2565 and 75250, that added together give a triangular number (77815 = T₃₉₄).

The spelling of 256575250 in words is "two hundred fifty-six million, five hundred seventy-five thousand, two hundred fifty".