168164425 has 48 divisors (see below), whose sum is σ = 259483392. Its totient is φ = 106214400.

The previous prime is 168164407. The next prime is 168164461. The reversal of 168164425 is 524461861.

It is not a de Polignac number, because 168164425 - 2⁹ = 168163913 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 (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59392 + ... + 62158.

It is an arithmetic number, because the mean of its divisors is an integer number (5405904).

Almost surely, 2^168164425 is an apocalyptic number.

It is an amenable number.

168164425 is a deficient number, since it is larger than the sum of its proper divisors (91318967).

168164425 is a wasteful number, since it uses less digits than its factorization.

168164425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818 (or 2813 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 168164425 is about 12967.8226776896. The cubic root of 168164425 is about 551.9647909087.

The spelling of 168164425 in words is "one hundred sixty-eight million, one hundred sixty-four thousand, four hundred twenty-five".