1000002500 has 60 divisors (see below), whose sum is σ = 2499249984. Its totient is φ = 342852000.

The previous prime is 1000002499. The next prime is 1000002571. The reversal of 1000002500 is 52000001.

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 19 ways as a sum of consecutive naturals, for example, 11072 + ... + 46071.

Almost surely, 2^1000002500 is an apocalyptic number.

1000002500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000002500 is an abundant number, since it is smaller than the sum of its proper divisors (1499247484).

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

1000002500 is an equidigital number, since it uses as much as digits as its factorization.

1000002500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57174 (or 57157 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 8.

The square root of 1000002500 is about 31622.8161301298. The cubic root of 1000002500 is about 1000.0008333326. Note that the first 3 decimals are identical.

Adding to 1000002500 its reverse (52000001), we get a palindrome (1052002501).

The spelling of 1000002500 in words is "one billion, two thousand, five hundred".