168349925 has 6 divisors (see below), whose sum is σ = 208753938. Its totient is φ = 134679920.

The previous prime is 168349921. The next prime is 168349957. The reversal of 168349925 is 529943861.

It can be written as a sum of positive squares in 3 ways, for example, as 362404 + 167987521 = 602^2 + 12961^2 .

It is not a de Polignac number, because 168349925 - 2² = 168349921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 168349925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168349921) 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 5 ways as a sum of consecutive naturals, for example, 3366974 + ... + 3367023.

It is an arithmetic number, because the mean of its divisors is an integer number (34792323).

Almost surely, 2^168349925 is an apocalyptic number.

It is an amenable number.

168349925 is a deficient number, since it is larger than the sum of its proper divisors (40404013).

168349925 is an equidigital number, since it uses as much as digits as its factorization.

168349925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734007 (or 6734002 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 168349925 is about 12974.9730250201. The cubic root of 168349925 is about 552.1676714002.

The spelling of 168349925 in words is "one hundred sixty-eight million, three hundred forty-nine thousand, nine hundred twenty-five".