255830809 has 8 divisors (see below), whose sum is σ = 275752512. Its totient is φ = 235943760.

The previous prime is 255830797. The next prime is 255830831. The reversal of 255830809 is 908038552.

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

It is not a de Polignac number, because 255830809 - 2¹⁵ = 255798041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255830009) 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, 7854 + ... + 23944.

It is an arithmetic number, because the mean of its divisors is an integer number (34469064).

Almost surely, 2^255830809 is an apocalyptic number.

It is an amenable number.

255830809 is a deficient number, since it is larger than the sum of its proper divisors (19921703).

255830809 is a wasteful number, since it uses less digits than its factorization.

255830809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17327.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 255830809 is about 15994.7119073774. The cubic root of 255830809 is about 634.8205076830.

The spelling of 255830809 in words is "two hundred fifty-five million, eight hundred thirty thousand, eight hundred nine".