256219 has 2 divisors, whose sum is σ = 256220. Its totient is φ = 256218.

The previous prime is 256211. The next prime is 256279. The reversal of 256219 is 912652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256219 - 2³ = 256211 is a prime.

It is a super-2 number, since 2×256219² = 131296351922, which contains 22 as substring.

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 256193 and 256202.

It is not a weakly prime, because it can be changed into another prime (256211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128109 + 128110.

It is an arithmetic number, because the mean of its divisors is an integer number (128110).

2²⁵⁶²¹⁹ is an apocalyptic number.

256219 is a deficient number, since it is larger than the sum of its proper divisors (1).

256219 is an equidigital number, since it uses as much as digits as its factorization.

256219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 256219 is about 506.1807977393. The cubic root of 256219 is about 63.5141432113.

The spelling of 256219 in words is "two hundred fifty-six thousand, two hundred nineteen".