163425125 has 16 divisors (see below), whose sum is σ = 204655152. Its totient is φ = 130291200.

The previous prime is 163425109. The next prime is 163425133. The reversal of 163425125 is 521524361.

It can be written as a sum of positive squares in 8 ways, for example, as 68674369 + 94750756 = 8287^2 + 9734^2 .

It is not a de Polignac number, because 163425125 - 2⁴ = 163425109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37037 + ... + 41213.

It is an arithmetic number, because the mean of its divisors is an integer number (12790947).

Almost surely, 2^163425125 is an apocalyptic number.

It is an amenable number.

163425125 is a deficient number, since it is larger than the sum of its proper divisors (41230027).

163425125 is an equidigital number, since it uses as much as digits as its factorization.

163425125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4505 (or 4495 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 163425125 is about 12783.7836730758. The cubic root of 163425125 is about 546.7300464803.

Adding to 163425125 its reverse (521524361), we get a palindrome (684949486).

The spelling of 163425125 in words is "one hundred sixty-three million, four hundred twenty-five thousand, one hundred twenty-five".