255660205 has 4 divisors (see below), whose sum is σ = 306792252. Its totient is φ = 204528160.

The previous prime is 255660199. The next prime is 255660217. The reversal of 255660205 is 502066552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46539684 + 209120521 = 6822^2 + 14461^2 .

It is not a de Polignac number, because 255660205 - 2⁹ = 255659693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25566016 + ... + 25566025.

It is an arithmetic number, because the mean of its divisors is an integer number (76698063).

Almost surely, 2^255660205 is an apocalyptic number.

It is an amenable number.

255660205 is a deficient number, since it is larger than the sum of its proper divisors (51132047).

255660205 is an equidigital number, since it uses as much as digits as its factorization.

255660205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51132046.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 255660205 is about 15989.3778803304. The cubic root of 255660205 is about 634.6793636178.

The spelling of 255660205 in words is "two hundred fifty-five million, six hundred sixty thousand, two hundred five".