255785727 has 4 divisors (see below), whose sum is σ = 341047640. Its totient is φ = 170523816.

The previous prime is 255785693. The next prime is 255785729. The reversal of 255785727 is 727587552.

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

It is not a de Polignac number, because 255785727 - 2¹⁴ = 255769343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255785729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42630952 + ... + 42630957.

It is an arithmetic number, because the mean of its divisors is an integer number (85261910).

Almost surely, 2^255785727 is an apocalyptic number.

255785727 is a deficient number, since it is larger than the sum of its proper divisors (85261913).

255785727 is an equidigital number, since it uses as much as digits as its factorization.

255785727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85261912.

The product of its digits is 1372000, while the sum is 48.

The square root of 255785727 is about 15993.3025670122. The cubic root of 255785727 is about 634.7832165537.

The spelling of 255785727 in words is "two hundred fifty-five million, seven hundred eighty-five thousand, seven hundred twenty-seven".