163425243 has 4 divisors (see below), whose sum is σ = 217900328. Its totient is φ = 108950160.

The previous prime is 163425239. The next prime is 163425247. The reversal of 163425243 is 342524361.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (163425239) and next prime (163425247).

It is not a de Polignac number, because 163425243 - 2² = 163425239 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 163425243.

It is not an unprimeable number, because it can be changed into a prime (163425247) 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, 27237538 + ... + 27237543.

It is an arithmetic number, because the mean of its divisors is an integer number (54475082).

Almost surely, 2^163425243 is an apocalyptic number.

163425243 is a deficient number, since it is larger than the sum of its proper divisors (54475085).

163425243 is an equidigital number, since it uses as much as digits as its factorization.

163425243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54475084.

The product of its digits is 17280, while the sum is 30.

The square root of 163425243 is about 12783.7882882970. The cubic root of 163425243 is about 546.7301780678.

The spelling of 163425243 in words is "one hundred sixty-three million, four hundred twenty-five thousand, two hundred forty-three".