Adding to 2566 its product of digits (360), we get a triangular number (2926 = T76).
2566 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
2566 is strictly pandigital in base 5.
It is a plaindrome in base 10, base 12 and base 13.
It is a nialpdrome in base 15.
It is a congruent number.
It is an unprimeable number.
22566 is an apocalyptic number.
2566 is a wasteful number, since it uses less digits than its factorization.
2566 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1285.
The square root of 2566 is about 50.6557005677. The cubic root of 2566 is about 13.6904865844.
The spelling of 2566 in words is "two thousand, five hundred sixty-six".