163387825 has 12 divisors (see below), whose sum is σ = 209137408. Its totient is φ = 126493200.

The previous prime is 163387771. The next prime is 163387841. The reversal of 163387825 is 528783361.

It is not a de Polignac number, because 163387825 - 2⁹ = 163387313 is a prime.

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, 104637 + ... + 106186.

Almost surely, 2^163387825 is an apocalyptic number.

It is an amenable number.

163387825 is a deficient number, since it is larger than the sum of its proper divisors (45749583).

163387825 is a wasteful number, since it uses less digits than its factorization.

163387825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210864 (or 210859 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 163387825 is about 12782.3247103178. The cubic root of 163387825 is about 546.6884482613.

The spelling of 163387825 in words is "one hundred sixty-three million, three hundred eighty-seven thousand, eight hundred twenty-five".