2505610566 has 12 divisors (see below), whose sum is σ = 5428822932. Its totient is φ = 835203516.

The previous prime is 2505610553. The next prime is 2505610567. The reversal of 2505610566 is 6650165052.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2505610566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505610567) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69600276 + ... + 69600311.

It is an arithmetic number, because the mean of its divisors is an integer number (452401911).

Almost surely, 2^2505610566 is an apocalyptic number.

2505610566 is an abundant number, since it is smaller than the sum of its proper divisors (2923212366).

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

2505610566 is a wasteful number, since it uses less digits than its factorization.

2505610566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139200595 (or 139200592 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 2505610566 is about 50056.0742168221. The cubic root of 2505610566 is about 1358.2233443386.

The spelling of 2505610566 in words is "two billion, five hundred five million, six hundred ten thousand, five hundred sixty-six".