255380305 has 8 divisors (see below), whose sum is σ = 306574272. Its totient is φ = 204225648.

The previous prime is 255380303. The next prime is 255380309. The reversal of 255380305 is 503083552.

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 255380305 - 2¹ = 255380303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255380303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7132 + ... + 23698.

It is an arithmetic number, because the mean of its divisors is an integer number (38321784).

Almost surely, 2^255380305 is an apocalyptic number.

It is an amenable number.

255380305 is a deficient number, since it is larger than the sum of its proper divisors (51193967).

255380305 is a wasteful number, since it uses less digits than its factorization.

255380305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19655.

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

The square root of 255380305 is about 15980.6227976259. The cubic root of 255380305 is about 634.4476607301.

The spelling of 255380305 in words is "two hundred fifty-five million, three hundred eighty thousand, three hundred five".