256160209 has 2 divisors, whose sum is σ = 256160210. Its totient is φ = 256160208.

The previous prime is 256160197. The next prime is 256160221. The reversal of 256160209 is 902061652.

256160209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (256160197) and next prime (256160221).

It can be written as a sum of positive squares in only one way, i.e., 197683600 + 58476609 = 14060^2 + 7647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256160209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (256160809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128080104 + 128080105.

It is an arithmetic number, because the mean of its divisors is an integer number (128080105).

Almost surely, 2^256160209 is an apocalyptic number.

It is an amenable number.

256160209 is a deficient number, since it is larger than the sum of its proper divisors (1).

256160209 is an equidigital number, since it uses as much as digits as its factorization.

256160209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 256160209 is about 16005.0057482027. The cubic root of 256160209 is about 635.0928493820.

The spelling of 256160209 in words is "two hundred fifty-six million, one hundred sixty thousand, two hundred nine".