2555566650 has 288 divisors, whose sum is σ = 8949927168. Its totient is φ = 507340800.

The previous prime is 2555566631. The next prime is 2555566661. The reversal of 2555566650 is 566655552.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 2555566596 and 2555566605.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 694315 + ... + 697985.

It is an arithmetic number, because the mean of its divisors is an integer number (31076136).

Almost surely, 2^2555566650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2555566650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4474963584).

2555566650 is an abundant number, since it is smaller than the sum of its proper divisors (6394360518).

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

2555566650 is a wasteful number, since it uses less digits than its factorization.

2555566650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726 (or 3718 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 45.

The square root of 2555566650 is about 50552.6126921250. The cubic root of 2555566650 is about 1367.1906216919.

The spelling of 2555566650 in words is "two billion, five hundred fifty-five million, five hundred sixty-six thousand, six hundred fifty".