168473307025 has 27 divisors (see below), whose sum is σ = 211219832721. Its totient is φ = 133302649440.

The previous prime is 168473306987. The next prime is 168473307031. The reversal of 168473307025 is 520703374861.

It is a happy number.

The square root of 168473307025 is 410455.

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

It can be written as a sum of positive squares in 4 ways, for example, as 4117660561 + 164355646464 = 64169^2 + 405408^2 .

It is a de Polignac number, because none of the positive numbers 2^k-168473307025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 211383927 + ... + 211384723.

Almost surely, 2^168473307025 is an apocalyptic number.

168473307025 is the 410455-th square number.

168473307025 is the 205228-th centered octagonal number.

It is an amenable number.

168473307025 is a deficient number, since it is larger than the sum of its proper divisors (42746525696).

168473307025 is an frugal number, since it uses more digits than its factorization.

168473307025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 168473307025 in words is "one hundred sixty-eight billion, four hundred seventy-three million, three hundred seven thousand, twenty-five".