256194211 has 16 divisors (see below), whose sum is σ = 317737728. Its totient is φ = 201146400.

The previous prime is 256194193. The next prime is 256194223. The reversal of 256194211 is 112491652.

It is not a de Polignac number, because 256194211 - 2¹⁵ = 256161443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256194251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1176 + ... + 22666.

It is an arithmetic number, because the mean of its divisors is an integer number (19858608).

Almost surely, 2^256194211 is an apocalyptic number.

256194211 is a deficient number, since it is larger than the sum of its proper divisors (61543517).

256194211 is a wasteful number, since it uses less digits than its factorization.

256194211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21642.

The product of its digits is 4320, while the sum is 31.

The square root of 256194211 is about 16006.0679431271. The cubic root of 256194211 is about 635.1209482968.

The spelling of 256194211 in words is "two hundred fifty-six million, one hundred ninety-four thousand, two hundred eleven".