163711225 has 12 divisors (see below), whose sum is σ = 203407740. Its totient is φ = 130707200.

The previous prime is 163711193. The next prime is 163711271. The reversal of 163711225 is 522117361.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1505529 + 162205696 = 1227^2 + 12736^2 .

It is not a de Polignac number, because 163711225 - 2⁵ = 163711193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163711193 and 163711202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6741 + ... + 19309.

It is an arithmetic number, because the mean of its divisors is an integer number (16950645).

Almost surely, 2^163711225 is an apocalyptic number.

It is an amenable number.

163711225 is a deficient number, since it is larger than the sum of its proper divisors (39696515).

163711225 is a wasteful number, since it uses less digits than its factorization.

163711225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13100 (or 13095 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 163711225 is about 12794.9687377500. The cubic root of 163711225 is about 547.0489045842.

Adding to 163711225 its reverse (522117361), we get a palindrome (685828586).

The spelling of 163711225 in words is "one hundred sixty-three million, seven hundred eleven thousand, two hundred twenty-five".