163456225 has 9 divisors (see below), whose sum is σ = 202765017. Its totient is φ = 130713840.

The previous prime is 163456199. The next prime is 163456247. The reversal of 163456225 is 522654361.

The square root of 163456225 is 12785.

It is a perfect power (a square), and thus also a powerful number.

163456225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7306209 + 156150016 = 2703^2 + 12496^2 .

It is a de Polignac number, because none of the positive numbers 2^k-163456225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 62647 + ... + 65203.

Almost surely, 2^163456225 is an apocalyptic number.

163456225 is the 12785-th square number.

163456225 is the 6393-rd centered octagonal number.

It is an amenable number.

163456225 is a deficient number, since it is larger than the sum of its proper divisors (39308792).

163456225 is an frugal number, since it uses more digits than its factorization.

163456225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5124 (or 2562 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The cubic root of 163456225 is about 546.7647254114.

The spelling of 163456225 in words is "one hundred sixty-three million, four hundred fifty-six thousand, two hundred twenty-five".