2505530636 has 12 divisors (see below), whose sum is σ = 5011061328. Its totient is φ = 1073798832.

The previous prime is 2505530611. The next prime is 2505530647. The reversal of 2505530636 is 6360355052.

2505530636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2505530636 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2505530596 and 2505530605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44741591 + ... + 44741646.

It is an arithmetic number, because the mean of its divisors is an integer number (417588444).

Almost surely, 2^2505530636 is an apocalyptic number.

It is an amenable number.

2505530636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2505530636 is a wasteful number, since it uses less digits than its factorization.

2505530636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89483248 (or 89483246 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 35.

The square root of 2505530636 is about 50055.2758058529. The cubic root of 2505530636 is about 1358.2089015587.

Adding to 2505530636 its reverse (6360355052), we get a palindrome (8865885688).

The spelling of 2505530636 in words is "two billion, five hundred five million, five hundred thirty thousand, six hundred thirty-six".