168499225 has 6 divisors (see below), whose sum is σ = 208939070. Its totient is φ = 134799360.

The previous prime is 168499187. The next prime is 168499237. The reversal of 168499225 is 522994861.

It can be written as a sum of positive squares in 3 ways, for example, as 29942784 + 138556441 = 5472^2 + 11771^2 .

It is not a de Polignac number, because 168499225 - 2¹³ = 168491033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3369960 + ... + 3370009.

Almost surely, 2^168499225 is an apocalyptic number.

It is an amenable number.

168499225 is a deficient number, since it is larger than the sum of its proper divisors (40439845).

168499225 is an equidigital number, since it uses as much as digits as its factorization.

168499225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739979 (or 6739974 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 168499225 is about 12980.7251338282. The cubic root of 168499225 is about 552.3308519012.

The spelling of 168499225 in words is "one hundred sixty-eight million, four hundred ninety-nine thousand, two hundred twenty-five".