165032225 has 12 divisors (see below), whose sum is σ = 205403520. Its totient is φ = 131533200.

The previous prime is 165032167. The next prime is 165032227. The reversal of 165032225 is 522230561.

It is not a de Polignac number, because 165032225 - 2¹⁶ = 164966689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165032194 and 165032203.

It is not an unprimeable number, because it can be changed into a prime (165032227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5405 + ... + 18954.

It is an arithmetic number, because the mean of its divisors is an integer number (17116960).

Almost surely, 2^165032225 is an apocalyptic number.

It is an amenable number.

165032225 is a deficient number, since it is larger than the sum of its proper divisors (40371295).

165032225 is a wasteful number, since it uses less digits than its factorization.

165032225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24640 (or 24635 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 165032225 is about 12846.4868738500. The cubic root of 165032225 is about 548.5163595637.

Adding to 165032225 its reverse (522230561), we get a palindrome (687262786).

The spelling of 165032225 in words is "one hundred sixty-five million, thirty-two thousand, two hundred twenty-five".