256456223 has 2 divisors, whose sum is σ = 256456224. Its totient is φ = 256456222.

The previous prime is 256456217. The next prime is 256456229. The reversal of 256456223 is 322654652.

It is a balanced prime because it is at equal distance from previous prime (256456217) and next prime (256456229).

It is a cyclic number.

It is not a de Polignac number, because 256456223 - 2¹² = 256452127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256456229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128228111 + 128228112.

It is an arithmetic number, because the mean of its divisors is an integer number (128228112).

Almost surely, 2^256456223 is an apocalyptic number.

256456223 is a deficient number, since it is larger than the sum of its proper divisors (1).

256456223 is an equidigital number, since it uses as much as digits as its factorization.

256456223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 35.

The square root of 256456223 is about 16014.2506224925. The cubic root of 256456223 is about 635.3373890614.

The spelling of 256456223 in words is "two hundred fifty-six million, four hundred fifty-six thousand, two hundred twenty-three".