256226167 has 2 divisors, whose sum is σ = 256226168. Its totient is φ = 256226166.

The previous prime is 256226161. The next prime is 256226171. The reversal of 256226167 is 761622652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256226167 - 2²³ = 247837559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256226161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128113083 + 128113084.

It is an arithmetic number, because the mean of its divisors is an integer number (128113084).

Almost surely, 2^256226167 is an apocalyptic number.

256226167 is a deficient number, since it is larger than the sum of its proper divisors (1).

256226167 is an equidigital number, since it uses as much as digits as its factorization.

256226167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 256226167 is about 16007.0661584189. The cubic root of 256226167 is about 635.1473541514.

The spelling of 256226167 in words is "two hundred fifty-six million, two hundred twenty-six thousand, one hundred sixty-seven".