255422243442555 has 256 divisors, whose sum is σ = 550073802055680. Its totient is φ = 111306327137280.

The previous prime is 255422243442497. The next prime is 255422243442581. The reversal of 255422243442555 is 555244342224552.

255422243442555 is a `hidden beast` number, since 2 + 5 + 5 + 4 + 2 + 2 + 2 + 43 + 4 + 42 + 555 = 666.

It is not a de Polignac number, because 255422243442555 - 2¹³ = 255422243434363 is a prime.

It is an unprimeable number.

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 in 255 ways as a sum of consecutive naturals, for example, 515589175 + ... + 516084335.

It is an arithmetic number, because the mean of its divisors is an integer number (2148725789280).

Almost surely, 2^{255422243442555} is an apocalyptic number.

255422243442555 is an abundant number, since it is smaller than the sum of its proper divisors (294651558613125).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255422243442555 is an equidigital number, since it uses as much as digits as its factorization.

255422243442555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495510 (or 495492 counting only the distinct ones).

The product of its digits is 76800000, while the sum is 54.

The spelling of 255422243442555 in words is "two hundred fifty-five trillion, four hundred twenty-two billion, two hundred forty-three million, four hundred forty-two thousand, five hundred fifty-five".