256585750 has 32 divisors (see below), whose sum is σ = 493328160. Its totient is φ = 99856800.

The previous prime is 256585739. The next prime is 256585751. The reversal of 256585750 is 57585652.

It is a junction number, because it is equal to n+sod(n) for n = 256585697 and 256585706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256585751) 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 15 ways as a sum of consecutive naturals, for example, 4620 + ... + 23119.

It is an arithmetic number, because the mean of its divisors is an integer number (15416505).

Almost surely, 2^256585750 is an apocalyptic number.

256585750 is a deficient number, since it is larger than the sum of its proper divisors (236742410).

256585750 is a wasteful number, since it uses less digits than its factorization.

256585750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27793 (or 27783 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 43.

The square root of 256585750 is about 16018.2942287873. The cubic root of 256585750 is about 635.4443332335. Note that the first 3 decimals are identical.

The spelling of 256585750 in words is "two hundred fifty-six million, five hundred eighty-five thousand, seven hundred fifty".