255857826 has 32 divisors (see below), whose sum is σ = 598422528. Its totient is φ = 71401680.

The previous prime is 255857821. The next prime is 255857827. The reversal of 255857826 is 628758552.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (255857821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69030 + ... + 72641.

It is an arithmetic number, because the mean of its divisors is an integer number (18700704).

Almost surely, 2^255857826 is an apocalyptic number.

255857826 is an abundant number, since it is smaller than the sum of its proper divisors (342564702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255857826 is a wasteful number, since it uses less digits than its factorization.

255857826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141726.

The product of its digits is 1344000, while the sum is 48.

The square root of 255857826 is about 15995.5564454632. The cubic root of 255857826 is about 634.8428536259.

It can be divided in two parts, 25585 and 7826, that added together give a triangular number (33411 = T₂₅₈).

The spelling of 255857826 in words is "two hundred fifty-five million, eight hundred fifty-seven thousand, eight hundred twenty-six".