163630025 has 18 divisors (see below), whose sum is σ = 219715290. Its totient is φ = 120831360.

The previous prime is 163630009. The next prime is 163630031. The reversal of 163630025 is 520036361.

It can be written as a sum of positive squares in 9 ways, for example, as 144384256 + 19245769 = 12016^2 + 4387^2 .

It is not a de Polignac number, because 163630025 - 2⁴ = 163630009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163629976 and 163630003.

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 17 ways as a sum of consecutive naturals, for example, 15140 + ... + 23589.

It is an arithmetic number, because the mean of its divisors is an integer number (12206405).

Almost surely, 2^163630025 is an apocalyptic number.

It is an amenable number.

163630025 is a deficient number, since it is larger than the sum of its proper divisors (56085265).

163630025 is a wasteful number, since it uses less digits than its factorization.

163630025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38765 (or 38747 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 163630025 is about 12791.7952219382. The cubic root of 163630025 is about 546.9584450628.

Adding to 163630025 its reverse (520036361), we get a palindrome (683666386).

The spelling of 163630025 in words is "one hundred sixty-three million, six hundred thirty thousand, twenty-five".