255505004999 has 2 divisors, whose sum is σ = 255505005000. Its totient is φ = 255505004998.

The previous prime is 255505004987. The next prime is 255505005059. The reversal of 255505004999 is 999400505552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255505004999 - 2⁴ = 255505004983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255505004999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255505004299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127752502499 + 127752502500.

It is an arithmetic number, because the mean of its divisors is an integer number (127752502500).

Almost surely, 2^255505004999 is an apocalyptic number.

255505004999 is a deficient number, since it is larger than the sum of its proper divisors (1).

255505004999 is an equidigital number, since it uses as much as digits as its factorization.

255505004999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645000, while the sum is 53.

The spelling of 255505004999 in words is "two hundred fifty-five billion, five hundred five million, four thousand, nine hundred ninety-nine".