1668425504 has 48 divisors (see below), whose sum is σ = 3324598200. Its totient is φ = 824131584.

The previous prime is 1668425501. The next prime is 1668425513. The reversal of 1668425504 is 4055248661.

It can be written as a sum of positive squares in 4 ways, for example, as 1652585104 + 15840400 = 40652^2 + 3980^2 .

It is not an unprimeable number, because it can be changed into a prime (1668425501) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2012162 + ... + 2012990.

Almost surely, 2^1668425504 is an apocalyptic number.

It is an amenable number.

1668425504 is a deficient number, since it is larger than the sum of its proper divisors (1656172696).

1668425504 is a wasteful number, since it uses less digits than its factorization.

1668425504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525 (or 1517 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 1668425504 is about 40846.3646362807. The cubic root of 1668425504 is about 1186.0480213212.

The spelling of 1668425504 in words is "one billion, six hundred sixty-eight million, four hundred twenty-five thousand, five hundred four".