163225 has 6 divisors (see below), whose sum is σ = 202430. Its totient is φ = 130560.

The previous prime is 163223. The next prime is 163243. The reversal of 163225 is 522361.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9 + 163216 = 3^2 + 404^2 .

It is not a de Polignac number, because 163225 - 2¹ = 163223 is a prime.

163225 is a lucky number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3240 + ... + 3289.

2¹⁶³²²⁵ is an apocalyptic number.

It is an amenable number.

163225 is a deficient number, since it is larger than the sum of its proper divisors (39205).

163225 is an equidigital number, since it uses as much as digits as its factorization.

163225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539 (or 6534 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 163225 is about 404.0111384603. The cubic root of 163225 is about 54.6506786149.

Adding to 163225 its reverse (522361), we get a palindrome (685586).

The spelling of 163225 in words is "one hundred sixty-three thousand, two hundred twenty-five".