163361325 has 12 divisors (see below), whose sum is σ = 270090848. Its totient is φ = 87126000.

The previous prime is 163361311. The next prime is 163361329. The reversal of 163361325 is 523163361.

It is a happy number.

It is not a de Polignac number, because 163361325 - 2⁴ = 163361309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163361292 and 163361301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163361329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1089001 + ... + 1089150.

Almost surely, 2^163361325 is an apocalyptic number.

163361325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163361325 is a deficient number, since it is larger than the sum of its proper divisors (106729523).

163361325 is a wasteful number, since it uses less digits than its factorization.

163361325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178164 (or 2178159 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 163361325 is about 12781.2880806279. The cubic root of 163361325 is about 546.6588907199.

The spelling of 163361325 in words is "one hundred sixty-three million, three hundred sixty-one thousand, three hundred twenty-five".