2505005000 has 40 divisors (see below), whose sum is σ = 5869238430. Its totient is φ = 1002000000.

The previous prime is 2505004993. The next prime is 2505005039. The reversal of 2505005000 is 5005052.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 195049156 + 2309955844 = 13966^2 + 48062^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2505005000.

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 9 ways as a sum of consecutive naturals, for example, 245501 + ... + 255500.

Almost surely, 2^2505005000 is an apocalyptic number.

2505005000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2505005000 is an abundant number, since it is smaller than the sum of its proper divisors (3364233430).

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

2505005000 is an equidigital number, since it uses as much as digits as its factorization.

2505005000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501027 (or 501008 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 17.

The square root of 2505005000 is about 50050.0249750187. The cubic root of 2505005000 is about 1358.1139152359.

The spelling of 2505005000 in words is "two billion, five hundred five million, five thousand".