163401125 has 8 divisors (see below), whose sum is σ = 203924760. Its totient is φ = 130720800.

The previous prime is 163401107. The next prime is 163401163. The reversal of 163401125 is 521104361.

It can be written as a sum of positive squares in 4 ways, for example, as 30713764 + 132687361 = 5542^2 + 11519^2 .

It is not a de Polignac number, because 163401125 - 2⁶ = 163401061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163401125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653480 + ... + 653729.

It is an arithmetic number, because the mean of its divisors is an integer number (25490595).

Almost surely, 2^163401125 is an apocalyptic number.

It is an amenable number.

163401125 is a deficient number, since it is larger than the sum of its proper divisors (40523635).

163401125 is an equidigital number, since it uses as much as digits as its factorization.

163401125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307224 (or 1307214 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 163401125 is about 12782.8449493843. The cubic root of 163401125 is about 546.7032815964.

Adding to 163401125 its reverse (521104361), we get a palindrome (684505486).

The spelling of 163401125 in words is "one hundred sixty-three million, four hundred one thousand, one hundred twenty-five".