256258 has 8 divisors (see below), whose sum is σ = 407052. Its totient is φ = 120576.

The previous prime is 256219. The next prime is 256279. The reversal of 256258 is 852652.

It can be written as a sum of positive squares in 2 ways, for example, as 253009 + 3249 = 503^2 + 57^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3735 + ... + 3802.

256258 is a Friedman number, since it can be written as 6+82*5^5+2, using all its digits and the basic arithmetic operations.

2²⁵⁶²⁵⁸ is an apocalyptic number.

256258 is a deficient number, since it is larger than the sum of its proper divisors (150794).

256258 is a wasteful number, since it uses less digits than its factorization.

256258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7556.

The product of its digits is 4800, while the sum is 28.

The square root of 256258 is about 506.2193200580. The cubic root of 256258 is about 63.5173656186.

The spelling of 256258 in words is "two hundred fifty-six thousand, two hundred fifty-eight".