163725473 has 2 divisors, whose sum is σ = 163725474. Its totient is φ = 163725472.

The previous prime is 163725469. The next prime is 163725517. The reversal of 163725473 is 374527361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147306769 + 16418704 = 12137^2 + 4052^2 .

It is a cyclic number.

It is not a de Polignac number, because 163725473 - 2² = 163725469 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (163725433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81862736 + 81862737.

It is an arithmetic number, because the mean of its divisors is an integer number (81862737).

Almost surely, 2^163725473 is an apocalyptic number.

It is an amenable number.

163725473 is a deficient number, since it is larger than the sum of its proper divisors (1).

163725473 is an equidigital number, since it uses as much as digits as its factorization.

163725473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 38.

The square root of 163725473 is about 12795.5255069888. The cubic root of 163725473 is about 547.0647742487.

The spelling of 163725473 in words is "one hundred sixty-three million, seven hundred twenty-five thousand, four hundred seventy-three".