163897125 has 64 divisors (see below), whose sum is σ = 322583040. Its totient is φ = 72307200.

The previous prime is 163897091. The next prime is 163897133. The reversal of 163897125 is 521798361.

It is not a de Polignac number, because 163897125 - 2¹⁸ = 163634981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75049 + ... + 77201.

It is an arithmetic number, because the mean of its divisors is an integer number (5040360).

Almost surely, 2^163897125 is an apocalyptic number.

163897125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163897125 is a deficient number, since it is larger than the sum of its proper divisors (158685915).

163897125 is a wasteful number, since it uses less digits than its factorization.

163897125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207 (or 2197 counting only the distinct ones).

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

The square root of 163897125 is about 12802.2312508406. The cubic root of 163897125 is about 547.2558908437.

The spelling of 163897125 in words is "one hundred sixty-three million, eight hundred ninety-seven thousand, one hundred twenty-five".