2505213885 has 16 divisors (see below), whose sum is σ = 4009547520. Its totient is φ = 1335712320.

The previous prime is 2505213863. The next prime is 2505213901. The reversal of 2505213885 is 5883125052.

It is not a de Polignac number, because 2505213885 - 2¹¹ = 2505211837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30396 + ... + 77034.

It is an arithmetic number, because the mean of its divisors is an integer number (250596720).

Almost surely, 2^2505213885 is an apocalyptic number.

It is an amenable number.

2505213885 is a deficient number, since it is larger than the sum of its proper divisors (1504333635).

2505213885 is a wasteful number, since it uses less digits than its factorization.

2505213885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50228.

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 2505213885 is about 50052.1116937138. Note that the first 3 decimals coincide. The cubic root of 2505213885 is about 1358.1516638952.

The spelling of 2505213885 in words is "two billion, five hundred five million, two hundred thirteen thousand, eight hundred eighty-five".