168513625 has 16 divisors (see below), whose sum is σ = 240349824. Its totient is φ = 115551600.

The previous prime is 168513581. The next prime is 168513629. The reversal of 168513625 is 526315861.

It is not a de Polignac number, because 168513625 - 2⁷ = 168513497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168513629) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 95419 + ... + 97168.

It is an arithmetic number, because the mean of its divisors is an integer number (15021864).

Almost surely, 2^168513625 is an apocalyptic number.

It is an amenable number.

168513625 is a deficient number, since it is larger than the sum of its proper divisors (71836199).

168513625 is an equidigital number, since it uses as much as digits as its factorization.

168513625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192609 (or 192599 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 168513625 is about 12981.2797905291. The cubic root of 168513625 is about 552.3465855793.

The spelling of 168513625 in words is "one hundred sixty-eight million, five hundred thirteen thousand, six hundred twenty-five".