255411578285489 has 2 divisors, whose sum is σ = 255411578285490. Its totient is φ = 255411578285488.

The previous prime is 255411578285417. The next prime is 255411578285519. The reversal of 255411578285489 is 984582875114552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240801868555264 + 14609709730225 = 15517792^2 + 3822265^2 .

It is a cyclic number.

It is not a de Polignac number, because 255411578285489 - 2⁸ = 255411578285233 is a prime.

It is not a weakly prime, because it can be changed into another prime (255411578285089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127705789142744 + 127705789142745.

It is an arithmetic number, because the mean of its divisors is an integer number (127705789142745).

Almost surely, 2^{255411578285489} is an apocalyptic number.

It is an amenable number.

255411578285489 is a deficient number, since it is larger than the sum of its proper divisors (1).

255411578285489 is an equidigital number, since it uses as much as digits as its factorization.

255411578285489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240000, while the sum is 74.

The spelling of 255411578285489 in words is "two hundred fifty-five trillion, four hundred eleven billion, five hundred seventy-eight million, two hundred eighty-five thousand, four hundred eighty-nine".