It is a tau number, because it is divible by the number of its divisors (90).
It is a zygodrome in base 2.
It is a congruent number.
It is an unprimeable number.
2255600 is an apocalyptic number.
255600 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 255600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449748).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
255600 is a wasteful number, since it uses less digits than its factorization.
255600 is an evil number, because the sum of its binary digits is even.
The square root of 255600 is about 505.5689863906. The cubic root of 255600 is about 63.4629539841.
The spelling of 255600 in words is "two hundred fifty-five thousand, six hundred".