255231554563 has 2 divisors, whose sum is σ = 255231554564. Its totient is φ = 255231554562.

The previous prime is 255231554561. The next prime is 255231554573. The reversal of 255231554563 is 365455132552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255231554563 - 2¹ = 255231554561 is a prime.

It is a super-2 number, since 2×255231554563² (a number of 24 digits) contains 22 as substring.

Together with 255231554561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (255231554561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127615777281 + 127615777282.

It is an arithmetic number, because the mean of its divisors is an integer number (127615777282).

Almost surely, 2^255231554563 is an apocalyptic number.

255231554563 is a deficient number, since it is larger than the sum of its proper divisors (1).

255231554563 is an equidigital number, since it uses as much as digits as its factorization.

255231554563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700000, while the sum is 46.

The spelling of 255231554563 in words is "two hundred fifty-five billion, two hundred thirty-one million, five hundred fifty-four thousand, five hundred sixty-three".