256563199 has 8 divisors (see below), whose sum is σ = 264190752. Its totient is φ = 249000960.

The previous prime is 256563193. The next prime is 256563221. The reversal of 256563199 is 991365652.

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

It is a cyclic number.

It is not a de Polignac number, because 256563199 - 2¹⁹ = 256038911 is a prime.

It is a super-2 number, since 2×256563199² = 131649350162227202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256563193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8299 + ... + 24124.

It is an arithmetic number, because the mean of its divisors is an integer number (33023844).

Almost surely, 2^256563199 is an apocalyptic number.

256563199 is a deficient number, since it is larger than the sum of its proper divisors (7627553).

256563199 is a wasteful number, since it uses less digits than its factorization.

256563199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32657.

The product of its digits is 437400, while the sum is 46.

The square root of 256563199 is about 16017.5902994177. The cubic root of 256563199 is about 635.4257165528.

The spelling of 256563199 in words is "two hundred fifty-six million, five hundred sixty-three thousand, one hundred ninety-nine".