163133125 has 10 divisors (see below), whose sum is σ = 203851934. Its totient is φ = 130506000.

The previous prime is 163133123. The next prime is 163133143. The reversal of 163133125 is 521331361.

It can be written as a sum of positive squares in 5 ways, for example, as 87946884 + 75186241 = 9378^2 + 8671^2 .

It is not a de Polignac number, because 163133125 - 2¹ = 163133123 is a prime.

It is a super-2 number, since 2×163133125² = 53224832944531250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 163133125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163133123) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 129882 + ... + 131131.

Almost surely, 2^163133125 is an apocalyptic number.

It is an amenable number.

163133125 is a deficient number, since it is larger than the sum of its proper divisors (40718809).

163133125 is an frugal number, since it uses more digits than its factorization.

163133125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261033 (or 261018 counting only the distinct ones).

The product of its digits is 1620, while the sum is 25.

The square root of 163133125 is about 12772.3578481031. The cubic root of 163133125 is about 546.4042288719.

Adding to 163133125 its reverse (521331361), we get a palindrome (684464486).

The spelling of 163133125 in words is "one hundred sixty-three million, one hundred thirty-three thousand, one hundred twenty-five".