163225133 has 2 divisors, whose sum is σ = 163225134. Its totient is φ = 163225132.

The previous prime is 163225129. The next prime is 163225151. The reversal of 163225133 is 331522361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103286569 + 59938564 = 10163^2 + 7742^2 .

It is a cyclic number.

It is not a de Polignac number, because 163225133 - 2² = 163225129 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163225123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81612566 + 81612567.

It is an arithmetic number, because the mean of its divisors is an integer number (81612567).

Almost surely, 2^163225133 is an apocalyptic number.

It is an amenable number.

163225133 is a deficient number, since it is larger than the sum of its proper divisors (1).

163225133 is an equidigital number, since it uses as much as digits as its factorization.

163225133 is an evil number, because the sum of its binary digits is even.

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

The square root of 163225133 is about 12775.9591812122. The cubic root of 163225133 is about 546.5069345849.

Adding to 163225133 its reverse (331522361), we get a palindrome (494747494).

The spelling of 163225133 in words is "one hundred sixty-three million, two hundred twenty-five thousand, one hundred thirty-three".