168211125 has 24 divisors (see below), whose sum is σ = 303230616. Its totient is φ = 89712000.

The previous prime is 168211097. The next prime is 168211129. The reversal of 168211125 is 521112861.

It can be written as a sum of positive squares in 4 ways, for example, as 1258884 + 166952241 = 1122^2 + 12921^2 .

It is not a de Polignac number, because 168211125 - 2⁵ = 168211093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168211129) 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 23 ways as a sum of consecutive naturals, for example, 73636 + ... + 75885.

It is an arithmetic number, because the mean of its divisors is an integer number (12634609).

Almost surely, 2^168211125 is an apocalyptic number.

168211125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168211125 is a deficient number, since it is larger than the sum of its proper divisors (135019491).

168211125 is a wasteful number, since it uses less digits than its factorization.

168211125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149542 (or 149529 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 168211125 is about 12969.6231633768. The cubic root of 168211125 is about 552.0158805293.

Adding to 168211125 its reverse (521112861), we get a palindrome (689323986).

The spelling of 168211125 in words is "one hundred sixty-eight million, two hundred eleven thousand, one hundred twenty-five".