1668425259 has 8 divisors (see below), whose sum is σ = 2278824912. Its totient is φ = 1085154560.

The previous prime is 1668425243. The next prime is 1668425273. The reversal of 1668425259 is 9525248661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1668425259 - 2⁴ = 1668425243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1668425299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6782094 + ... + 6782339.

It is an arithmetic number, because the mean of its divisors is an integer number (284853114).

Almost surely, 2^1668425259 is an apocalyptic number.

1668425259 is a deficient number, since it is larger than the sum of its proper divisors (610399653).

1668425259 is a wasteful number, since it uses less digits than its factorization.

1668425259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13564477.

The product of its digits is 1036800, while the sum is 48.

The square root of 1668425259 is about 40846.3616372377. The cubic root of 1668425259 is about 1186.0479632661.

The spelling of 1668425259 in words is "one billion, six hundred sixty-eight million, four hundred twenty-five thousand, two hundred fifty-nine".