1668853925 has 12 divisors (see below), whose sum is σ = 2071418016. Its totient is φ = 1333767600.

The previous prime is 1668853919. The next prime is 1668853937. The reversal of 1668853925 is 5293588661.

It is not a de Polignac number, because 1668853925 - 2⁶ = 1668853861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6599 + ... + 58148.

It is an arithmetic number, because the mean of its divisors is an integer number (172618168).

Almost surely, 2^1668853925 is an apocalyptic number.

It is an amenable number.

1668853925 is a deficient number, since it is larger than the sum of its proper divisors (402564091).

1668853925 is a wasteful number, since it uses less digits than its factorization.

1668853925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65788 (or 65783 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 53.

The square root of 1668853925 is about 40851.6085974592. The cubic root of 1668853925 is about 1186.1495310763.

The spelling of 1668853925 in words is "one billion, six hundred sixty-eight million, eight hundred fifty-three thousand, nine hundred twenty-five".