2505643536 has 40 divisors (see below), whose sum is σ = 7061360544. Its totient is φ = 759285760.

The previous prime is 2505643531. The next prime is 2505643559. The reversal of 2505643536 is 6353465052.

It is a junction number, because it is equal to n+sod(n) for n = 2505643494 and 2505643503.

It is not an unprimeable number, because it can be changed into a prime (2505643531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2372241 + ... + 2373296.

Almost surely, 2^2505643536 is an apocalyptic number.

It is an amenable number.

2505643536 is an abundant number, since it is smaller than the sum of its proper divisors (4555717008).

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

2505643536 is a wasteful number, since it uses less digits than its factorization.

2505643536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745559 (or 4745553 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 39.

The square root of 2505643536 is about 50056.4035463995. The cubic root of 2505643536 is about 1358.2293016926.

The spelling of 2505643536 in words is "two billion, five hundred five million, six hundred forty-three thousand, five hundred thirty-six".