255818040 has 128 divisors (see below), whose sum is σ = 822312000. Its totient is φ = 63438848.

The previous prime is 255818021. The next prime is 255818083. The reversal of 255818040 is 40818552.

255818040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 255817992 and 255818010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180856 + ... + 182264.

Almost surely, 2^255818040 is an apocalyptic number.

255818040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255818040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411156000).

255818040 is an abundant number, since it is smaller than the sum of its proper divisors (566493960).

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

255818040 is a wasteful number, since it uses less digits than its factorization.

255818040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1525 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 255818040 is about 15994.3127392208. The cubic root of 255818040 is about 634.8099458095.

The spelling of 255818040 in words is "two hundred fifty-five million, eight hundred eighteen thousand, forty".