163722225 has 48 divisors (see below), whose sum is σ = 284981760. Its totient is φ = 82828800.

The previous prime is 163722157. The next prime is 163722233. The reversal of 163722225 is 522227361.

163722225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 163722225 - 2¹⁵ = 163689457 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 163722192 and 163722201.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113056 + ... + 114494.

It is an arithmetic number, because the mean of its divisors is an integer number (5937120).

Almost surely, 2^163722225 is an apocalyptic number.

163722225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163722225 is a deficient number, since it is larger than the sum of its proper divisors (121259535).

163722225 is a wasteful number, since it uses less digits than its factorization.

163722225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530 (or 1525 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 163722225 is about 12795.3985869921. The cubic root of 163722225 is about 547.0611566522.

Adding to 163722225 its reverse (522227361), we get a palindrome (685949586).

The spelling of 163722225 in words is "one hundred sixty-three million, seven hundred twenty-two thousand, two hundred twenty-five".