163879125 has 16 divisors (see below), whose sum is σ = 272695488. Its totient is φ = 87402000.

The previous prime is 163879081. The next prime is 163879129. The reversal of 163879125 is 521978361.

It is not a de Polignac number, because 163879125 - 2⁶ = 163879061 is a prime.

It is a super-2 number, since 2×163879125² = 53712735221531250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163879129) 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 15 ways as a sum of consecutive naturals, for example, 218131 + ... + 218880.

It is an arithmetic number, because the mean of its divisors is an integer number (17043468).

Almost surely, 2^163879125 is an apocalyptic number.

163879125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163879125 is a deficient number, since it is larger than the sum of its proper divisors (108816363).

163879125 is an equidigital number, since it uses as much as digits as its factorization.

163879125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437029 (or 437019 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 163879125 is about 12801.5282290827. The cubic root of 163879125 is about 547.2358559861.

The spelling of 163879125 in words is "one hundred sixty-three million, eight hundred seventy-nine thousand, one hundred twenty-five".