255836560 has 80 divisors (see below), whose sum is σ = 681956352. Its totient is φ = 87436800.

The previous prime is 255836551. The next prime is 255836573. The reversal of 255836560 is 65638552.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257665 + ... + 258655.

Almost surely, 2^255836560 is an apocalyptic number.

255836560 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 255836560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340978176).

255836560 is an abundant number, since it is smaller than the sum of its proper divisors (426119792).

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

255836560 is a wasteful number, since it uses less digits than its factorization.

255836560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472 (or 1466 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 255836560 is about 15994.8916845348. The cubic root of 255836560 is about 634.8252645057.

The spelling of 255836560 in words is "two hundred fifty-five million, eight hundred thirty-six thousand, five hundred sixty".