256014191 has 2 divisors, whose sum is σ = 256014192. Its totient is φ = 256014190.

The previous prime is 256014163. The next prime is 256014277. The reversal of 256014191 is 191410652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256014191 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256014391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128007095 + 128007096.

It is an arithmetic number, because the mean of its divisors is an integer number (128007096).

Almost surely, 2^256014191 is an apocalyptic number.

256014191 is a deficient number, since it is larger than the sum of its proper divisors (1).

256014191 is an equidigital number, since it uses as much as digits as its factorization.

256014191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 256014191 is about 16000.4434626044. The cubic root of 256014191 is about 634.9721532832.

It can be divided in two parts, 25601 and 4191, that added together give a palindrome (29792).

The spelling of 256014191 in words is "two hundred fifty-six million, fourteen thousand, one hundred ninety-one".