255406408223 has 2 divisors, whose sum is σ = 255406408224. Its totient is φ = 255406408222.

The previous prime is 255406408177. The next prime is 255406408237. The reversal of 255406408223 is 322804604552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255406408223 - 2²² = 255402213919 is a prime.

It is a super-2 number, since 2×255406408223² (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 (255406408423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127703204111 + 127703204112.

It is an arithmetic number, because the mean of its divisors is an integer number (127703204112).

Almost surely, 2^255406408223 is an apocalyptic number.

255406408223 is a deficient number, since it is larger than the sum of its proper divisors (1).

255406408223 is an equidigital number, since it uses as much as digits as its factorization.

255406408223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 255406408223 in words is "two hundred fifty-five billion, four hundred six million, four hundred eight thousand, two hundred twenty-three".