163225613 has 8 divisors (see below), whose sum is σ = 165809280. Its totient is φ = 160655040.

The previous prime is 163225603. The next prime is 163225631. The reversal of 163225613 is 316522361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163225613 - 2⁴ = 163225597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163225603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23558 + ... + 29688.

It is an arithmetic number, because the mean of its divisors is an integer number (20726160).

Almost surely, 2^163225613 is an apocalyptic number.

It is an amenable number.

163225613 is a deficient number, since it is larger than the sum of its proper divisors (2583667).

163225613 is an equidigital number, since it uses as much as digits as its factorization.

163225613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6547.

The product of its digits is 6480, while the sum is 29.

The square root of 163225613 is about 12775.9779664807. The cubic root of 163225613 is about 546.5074702930.

Adding to 163225613 its reverse (316522361), we get a palindrome (479747974).

The spelling of 163225613 in words is "one hundred sixty-three million, two hundred twenty-five thousand, six hundred thirteen".