163425533 has 4 divisors (see below), whose sum is σ = 166902720. Its totient is φ = 159948348.

The previous prime is 163425481. The next prime is 163425547. The reversal of 163425533 is 335524361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335524361 = 41 ⋅8183521.

It is a cyclic number.

It is not a de Polignac number, because 163425533 - 2¹⁰ = 163424509 is a prime.

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 163425533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163425133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1738523 + ... + 1738616.

It is an arithmetic number, because the mean of its divisors is an integer number (41725680).

Almost surely, 2^163425533 is an apocalyptic number.

It is an amenable number.

163425533 is a deficient number, since it is larger than the sum of its proper divisors (3477187).

163425533 is an equidigital number, since it uses as much as digits as its factorization.

163425533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477186.

The product of its digits is 32400, while the sum is 32.

The square root of 163425533 is about 12783.7996307827. The cubic root of 163425533 is about 546.7305014607.

Adding to 163425533 its reverse (335524361), we get a palindrome (498949894).

The spelling of 163425533 in words is "one hundred sixty-three million, four hundred twenty-five thousand, five hundred thirty-three".