168939225 has 144 divisors (see below), whose sum is σ = 384197632. Its totient is φ = 69050880.

The previous prime is 168939193. The next prime is 168939247. The reversal of 168939225 is 522939861.

168939225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168939225 - 2⁵ = 168939193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (233280) is a multiple of the sum of its prime divisors (288).

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 757464 + ... + 757686.

Almost surely, 2^168939225 is an apocalyptic number.

168939225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168939225 is an abundant number, since it is smaller than the sum of its proper divisors (215258407).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168939225 is a wasteful number, since it uses less digits than its factorization.

168939225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 288 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 168939225 is about 12997.6622898120. The cubic root of 168939225 is about 552.8111990058.

The spelling of 168939225 in words is "one hundred sixty-eight million, nine hundred thirty-nine thousand, two hundred twenty-five".