255888385 has 4 divisors (see below), whose sum is σ = 307066068. Its totient is φ = 204710704.

The previous prime is 255888361. The next prime is 255888397. The reversal of 255888385 is 583888552.

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 123454321 + 132434064 = 11111^2 + 11508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255888385 is a prime.

It is a Duffinian 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, 25588834 + ... + 25588843.

It is an arithmetic number, because the mean of its divisors is an integer number (76766517).

Almost surely, 2^255888385 is an apocalyptic number.

It is an amenable number.

255888385 is a deficient number, since it is larger than the sum of its proper divisors (51177683).

255888385 is an equidigital number, since it uses as much as digits as its factorization.

255888385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51177682.

The product of its digits is 3072000, while the sum is 52.

The square root of 255888385 is about 15996.5116509819. The cubic root of 255888385 is about 634.8681272851.

The spelling of 255888385 in words is "two hundred fifty-five million, eight hundred eighty-eight thousand, three hundred eighty-five".