255505205 has 8 divisors (see below), whose sum is σ = 310051800. Its totient is φ = 202107136.

The previous prime is 255505181. The next prime is 255505219. The reversal of 255505205 is 502505552.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27102436 + 228402769 = 5206^2 + 15113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255505205 - 2¹⁶ = 255439669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286640 + ... + 287529.

It is an arithmetic number, because the mean of its divisors is an integer number (38756475).

Almost surely, 2^255505205 is an apocalyptic number.

It is an amenable number.

255505205 is a deficient number, since it is larger than the sum of its proper divisors (54546595).

255505205 is an equidigital number, since it uses as much as digits as its factorization.

255505205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574263.

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 255505205 is about 15984.5301776436. The cubic root of 255505205 is about 634.5510746012.

The spelling of 255505205 in words is "two hundred fifty-five million, five hundred five thousand, two hundred five".