2555505118931 has 2 divisors, whose sum is σ = 2555505118932. Its totient is φ = 2555505118930.

The previous prime is 2555505118913. The next prime is 2555505118939. The reversal of 2555505118931 is 1398115055552.

Together with previous prime (2555505118913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2555505118931 - 2²⁶ = 2555438010067 is a prime.

It is a super-2 number, since 2×2555505118931² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2555505118931.

It is not a weakly prime, because it can be changed into another prime (2555505118939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277752559465 + 1277752559466.

It is an arithmetic number, because the mean of its divisors is an integer number (1277752559466).

Almost surely, 2^{2555505118931} is an apocalyptic number.

2555505118931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555505118931 is an equidigital number, since it uses as much as digits as its factorization.

2555505118931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350000, while the sum is 50.

The spelling of 2555505118931 in words is "two trillion, five hundred fifty-five billion, five hundred five million, one hundred eighteen thousand, nine hundred thirty-one".