255856838 has 4 divisors (see below), whose sum is σ = 383785260. Its totient is φ = 127928418.

The previous prime is 255856801. The next prime is 255856849. The reversal of 255856838 is 838658552.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63964208 + ... + 63964211.

It is an arithmetic number, because the mean of its divisors is an integer number (95946315).

Almost surely, 2^255856838 is an apocalyptic number.

255856838 is a deficient number, since it is larger than the sum of its proper divisors (127928422).

255856838 is a wasteful number, since it uses less digits than its factorization.

255856838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127928421.

The product of its digits is 2304000, while the sum is 50.

The square root of 255856838 is about 15995.5255618564. The cubic root of 255856838 is about 634.8420364722.

It can be divided in two parts, 25585 and 6838, that added together give a palindrome (32423).

The spelling of 255856838 in words is "two hundred fifty-five million, eight hundred fifty-six thousand, eight hundred thirty-eight".