255826 has 4 divisors (see below), whose sum is σ = 383742. Its totient is φ = 127912.

The previous prime is 255803. The next prime is 255839. The reversal of 255826 is 628552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 216225 + 39601 = 465^2 + 199^2 .

It is a junction number, because it is equal to n+sod(n) for n = 255794 and 255803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63955 + ... + 63958.

2²⁵⁵⁸²⁶ is an apocalyptic number.

255826 is a deficient number, since it is larger than the sum of its proper divisors (127916).

255826 is a wasteful number, since it uses less digits than its factorization.

255826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127915.

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

The square root of 255826 is about 505.7924475514. The cubic root of 255826 is about 63.4816529962.

It can be divided in two parts, 255 and 826, that added together give a triangular number (1081 = T₄₆).

The spelling of 255826 in words is "two hundred fifty-five thousand, eight hundred twenty-six".