255722 has 8 divisors (see below), whose sum is σ = 396900. Its totient is φ = 123424.

The previous prime is 255713. The next prime is 255733. The reversal of 255722 is 227552.

It can be written as a sum of positive squares in 2 ways, for example, as 241081 + 14641 = 491^2 + 121^2 .

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, 2147 + ... + 2262.

2²⁵⁵⁷²² is an apocalyptic number.

255722 is a deficient number, since it is larger than the sum of its proper divisors (141178).

255722 is a wasteful number, since it uses less digits than its factorization.

255722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440.

The product of its digits is 1400, while the sum is 23.

The square root of 255722 is about 505.6896281317. The cubic root of 255722 is about 63.4730495095.

The spelling of 255722 in words is "two hundred fifty-five thousand, seven hundred twenty-two".