255950999069 has 2 divisors, whose sum is σ = 255950999070. Its totient is φ = 255950999068.

The previous prime is 255950999041. The next prime is 255950999081. The reversal of 255950999069 is 960999059552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189714255844 + 66236743225 = 435562^2 + 257365^2 .

It is a cyclic number.

It is not a de Polignac number, because 255950999069 - 2²⁰ = 255949950493 is a prime.

It is a super-2 number, since 2×255950999069² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255950999869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127975499534 + 127975499535.

It is an arithmetic number, because the mean of its divisors is an integer number (127975499535).

Almost surely, 2^255950999069 is an apocalyptic number.

It is an amenable number.

255950999069 is a deficient number, since it is larger than the sum of its proper divisors (1).

255950999069 is an equidigital number, since it uses as much as digits as its factorization.

255950999069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88573500, while the sum is 68.

The spelling of 255950999069 in words is "two hundred fifty-five billion, nine hundred fifty million, nine hundred ninety-nine thousand, sixty-nine".