256411211 has 8 divisors (see below), whose sum is σ = 297415680. Its totient is φ = 216500328.

The previous prime is 256411201. The next prime is 256411217. The reversal of 256411211 is 112114652.

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 256411211 - 2¹⁸ = 256149067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256411217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272891 + ... + 273828.

It is an arithmetic number, because the mean of its divisors is an integer number (37176960).

Almost surely, 2^256411211 is an apocalyptic number.

256411211 is a deficient number, since it is larger than the sum of its proper divisors (41004469).

256411211 is an equidigital number, since it uses as much as digits as its factorization.

256411211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546793.

The product of its digits is 480, while the sum is 23.

The square root of 256411211 is about 16012.8451875362. The cubic root of 256411211 is about 635.3002164015.

Adding to 256411211 its reverse (112114652), we get a palindrome (368525863).

The spelling of 256411211 in words is "two hundred fifty-six million, four hundred eleven thousand, two hundred eleven".