256255099 has 2 divisors, whose sum is σ = 256255100. Its totient is φ = 256255098.

The previous prime is 256255067. The next prime is 256255123. The reversal of 256255099 is 990552652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256255099 - 2⁵ = 256255067 is a prime.

It is not a weakly prime, because it can be changed into another prime (256255009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128127549 + 128127550.

It is an arithmetic number, because the mean of its divisors is an integer number (128127550).

Almost surely, 2^256255099 is an apocalyptic number.

256255099 is a deficient number, since it is larger than the sum of its proper divisors (1).

256255099 is an equidigital number, since it uses as much as digits as its factorization.

256255099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 256255099 is about 16007.9698587922. The cubic root of 256255099 is about 635.1712593232.

The spelling of 256255099 in words is "two hundred fifty-six million, two hundred fifty-five thousand, ninety-nine".