168025381 has 8 divisors (see below), whose sum is σ = 172443744. Its totient is φ = 163630320.

The previous prime is 168025369. The next prime is 168025397. The reversal of 168025381 is 183520861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168025381 - 2⁵ = 168025349 is a prime.

It is a super-2 number, since 2×168025381² = 56465057320390322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168025181) 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 7 ways as a sum of consecutive naturals, for example, 9291 + ... + 20551.

It is an arithmetic number, because the mean of its divisors is an integer number (21555468).

Almost surely, 2^168025381 is an apocalyptic number.

It is an amenable number.

168025381 is a deficient number, since it is larger than the sum of its proper divisors (4418363).

168025381 is a wasteful number, since it uses less digits than its factorization.

168025381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11651.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 168025381 is about 12962.4604531701. The cubic root of 168025381 is about 551.8126212796.

The spelling of 168025381 in words is "one hundred sixty-eight million, twenty-five thousand, three hundred eighty-one".