168351025 has 12 divisors (see below), whose sum is σ = 208916812. Its totient is φ = 134576640.

The previous prime is 168351019. The next prime is 168351041. The reversal of 168351025 is 520153861.

It can be written as a sum of positive squares in 6 ways, for example, as 10195249 + 158155776 = 3193^2 + 12576^2 .

It is not a de Polignac number, because 168351025 - 2⁵ = 168350993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58009 + ... + 60841.

Almost surely, 2^168351025 is an apocalyptic number.

It is an amenable number.

168351025 is a deficient number, since it is larger than the sum of its proper divisors (40565787).

168351025 is a wasteful number, since it uses less digits than its factorization.

168351025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220 (or 5215 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 168351025 is about 12975.0154142490. The cubic root of 168351025 is about 552.1688740205.

The spelling of 168351025 in words is "one hundred sixty-eight million, three hundred fifty-one thousand, twenty-five".