1680000625 has 40 divisors (see below), whose sum is σ = 2192879304. Its totient is φ = 1285440000.

The previous prime is 1680000613. The next prime is 1680000667. The reversal of 1680000625 is 5260000861.

It can be written as a sum of positive squares in 20 ways, for example, as 1670520384 + 9480241 = 40872^2 + 3079^2 .

It is not a de Polignac number, because 1680000625 - 2¹¹ = 1679998577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1680000593 and 1680000602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1357507 + ... + 1358743.

Almost surely, 2^1680000625 is an apocalyptic number.

It is an amenable number.

1680000625 is a deficient number, since it is larger than the sum of its proper divisors (512878679).

1680000625 is an equidigital number, since it uses as much as digits as its factorization.

1680000625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1680000625 is about 40987.8106880570. The cubic root of 1680000625 is about 1188.7845379713.

The spelling of 1680000625 in words is "one billion, six hundred eighty million, six hundred twenty-five", and thus it is an aban number.