168243530625 has 75 divisors (see below), whose sum is σ = 314230283653. Its totient is φ = 89680662000.

The previous prime is 168243530593. The next prime is 168243530647. The reversal of 168243530625 is 526035342861.

The square root of 168243530625 is 410175.

It is a perfect power (a square), and thus also a powerful number.

168243530625 is a `hidden beast` number, since 16 + 8 + 2 + 4 + 3 + 5 + 3 + 0 + 625 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13190292801 + 155053237824 = 114849^2 + 393768^2 .

It is a tau number, because it is divible by the number of its divisors (75).

It is not a de Polignac number, because 168243530625 - 2⁵ = 168243530593 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 92288464 + ... + 92290286.

Almost surely, 2^168243530625 is an apocalyptic number.

168243530625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

168243530625 is the 410175-th square number.

168243530625 is the 205088-th centered octagonal number.

It is an amenable number.

168243530625 is a deficient number, since it is larger than the sum of its proper divisors (145986753028).

168243530625 is an frugal number, since it uses more digits than its factorization.

168243530625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678 (or 1831 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 168243530625 in words is "one hundred sixty-eight billion, two hundred forty-three million, five hundred thirty thousand, six hundred twenty-five".