256900229 has 2 divisors, whose sum is σ = 256900230. Its totient is φ = 256900228.

The previous prime is 256900201. The next prime is 256900253. The reversal of 256900229 is 922009652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129436129 + 127464100 = 11377^2 + 11290^2 .

It is a cyclic number.

It is not a de Polignac number, because 256900229 - 2¹⁶ = 256834693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256900129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128450114 + 128450115.

It is an arithmetic number, because the mean of its divisors is an integer number (128450115).

Almost surely, 2^256900229 is an apocalyptic number.

It is an amenable number.

256900229 is a deficient number, since it is larger than the sum of its proper divisors (1).

256900229 is an equidigital number, since it uses as much as digits as its factorization.

256900229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 256900229 is about 16028.1074678204. The cubic root of 256900229 is about 635.7038336322.

The spelling of 256900229 in words is "two hundred fifty-six million, nine hundred thousand, two hundred twenty-nine".