256325 has 6 divisors (see below), whose sum is σ = 317874. Its totient is φ = 205040.

The previous prime is 256313. The next prime is 256337. The reversal of 256325 is 523652.

256325 = 89² + 90² + ... + 113².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (256313) and next prime (256337).

It can be written as a sum of positive squares in 3 ways, for example, as 289 + 256036 = 17^2 + 506^2 .

It is a de Polignac number, because none of the positive numbers 2^k-256325 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256325.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256325.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5102 + ... + 5151.

It is an arithmetic number, because the mean of its divisors is an integer number (52979).

2²⁵⁶³²⁵ is an apocalyptic number.

256325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256325 is a deficient number, since it is larger than the sum of its proper divisors (61549).

256325 is a wasteful number, since it uses less digits than its factorization.

256325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10263 (or 10258 counting only the distinct ones).

The product of its digits is 1800, while the sum is 23.

The square root of 256325 is about 506.2854925830. The cubic root of 256325 is about 63.5229007858.

Adding to 256325 its reverse (523652), we get a palindrome (779977).

The spelling of 256325 in words is "two hundred fifty-six thousand, three hundred twenty-five".