256585652 has 24 divisors (see below), whose sum is σ = 477351840. Its totient is φ = 120333600.

The previous prime is 256585627. The next prime is 256585663.

256585652 is nontrivially palindromic in base 10.

It is an alternating number because its digits alternate between even and odd.

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, 9038 + ... + 24389.

It is an arithmetic number, because the mean of its divisors is an integer number (19889660).

Almost surely, 2^256585652 is an apocalyptic number.

It is an amenable number.

256585652 is a deficient number, since it is larger than the sum of its proper divisors (220766188).

256585652 is a wasteful number, since it uses less digits than its factorization.

256585652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33551 (or 33549 counting only the distinct ones).

The product of its digits is 720000, while the sum is 44.

The square root of 256585652 is about 16018.2911697846. The cubic root of 256585652 is about 635.4442523333. Note that the first 3 decimals are identical.

The spelling of 256585652 in words is "two hundred fifty-six million, five hundred eighty-five thousand, six hundred fifty-two".