255800807 has 2 divisors, whose sum is σ = 255800808. Its totient is φ = 255800806.

The previous prime is 255800803. The next prime is 255800879. The reversal of 255800807 is 708008552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255800807 - 2² = 255800803 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255800803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127900403 + 127900404.

It is an arithmetic number, because the mean of its divisors is an integer number (127900404).

Almost surely, 2^255800807 is an apocalyptic number.

255800807 is a deficient number, since it is larger than the sum of its proper divisors (1).

255800807 is an equidigital number, since it uses as much as digits as its factorization.

255800807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 255800807 is about 15993.7740074068. The cubic root of 255800807 is about 634.7956909829.

The spelling of 255800807 in words is "two hundred fifty-five million, eight hundred thousand, eight hundred seven".