168164625 has 32 divisors (see below), whose sum is σ = 283705344. Its totient is φ = 88444800.

The previous prime is 168164597. The next prime is 168164641. The reversal of 168164625 is 526461861.

It is a happy number.

It is not a de Polignac number, because 168164625 - 2¹⁰ = 168163601 is a prime.

It is a super-2 number, since 2×168164625² = 56558682202781250, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24304 + ... + 30446.

It is an arithmetic number, because the mean of its divisors is an integer number (8865792).

Almost surely, 2^168164625 is an apocalyptic number.

168164625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168164625 is a deficient number, since it is larger than the sum of its proper divisors (115540719).

168164625 is an equidigital number, since it uses as much as digits as its factorization.

168164625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6234 (or 6224 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 168164625 is about 12967.8303890821. The cubic root of 168164625 is about 551.9650097281.

The spelling of 168164625 in words is "one hundred sixty-eight million, one hundred sixty-four thousand, six hundred twenty-five".