1668183225 has 48 divisors (see below), whose sum is σ = 2960471232. Its totient is φ = 825845760.

The previous prime is 1668183217. The next prime is 1668183233. The reversal of 1668183225 is 5223818661.

It is an interprime number because it is at equal distance from previous prime (1668183217) and next prime (1668183233).

It is not a de Polignac number, because 1668183225 - 2³ = 1668183217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84114 + ... + 102036.

It is an arithmetic number, because the mean of its divisors is an integer number (61676484).

Almost surely, 2^1668183225 is an apocalyptic number.

1668183225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1668183225 is a deficient number, since it is larger than the sum of its proper divisors (1292288007).

1668183225 is a wasteful number, since it uses less digits than its factorization.

1668183225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18026 (or 18021 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 1668183225 is about 40843.3987934403. The cubic root of 1668183225 is about 1185.9906082216.

The spelling of 1668183225 in words is "one billion, six hundred sixty-eight million, one hundred eighty-three thousand, two hundred twenty-five".