2505813730 has 32 divisors (see below), whose sum is σ = 5332573440. Its totient is φ = 829510080.

The previous prime is 2505813703. The next prime is 2505813749. The reversal of 2505813730 is 373185052.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615166 + ... + 619225.

It is an arithmetic number, because the mean of its divisors is an integer number (166642920).

Almost surely, 2^2505813730 is an apocalyptic number.

2505813730 is an abundant number, since it is smaller than the sum of its proper divisors (2826759710).

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

2505813730 is a wasteful number, since it uses less digits than its factorization.

2505813730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234434.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 2505813730 is about 50058.1035397866. The cubic root of 2505813730 is about 1358.2600532395.

Adding to 2505813730 its reverse (373185052), we get a palindrome (2878998782).

The spelling of 2505813730 in words is "two billion, five hundred five million, eight hundred thirteen thousand, seven hundred thirty".