165224325 has 36 divisors (see below), whose sum is σ = 317777280. Its totient is φ = 75529440.

The previous prime is 165224303. The next prime is 165224363. The reversal of 165224325 is 523422561.

It is not a de Polignac number, because 165224325 - 2⁷ = 165224197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165224292 and 165224301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18805 + ... + 26154.

Almost surely, 2^165224325 is an apocalyptic number.

165224325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165224325 is a deficient number, since it is larger than the sum of its proper divisors (152552955).

165224325 is a wasteful number, since it uses less digits than its factorization.

165224325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44986 (or 44974 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 165224325 is about 12853.9614516304. The cubic root of 165224325 is about 548.7291041453.

Adding to 165224325 its reverse (523422561), we get a palindrome (688646886).

The spelling of 165224325 in words is "one hundred sixty-five million, two hundred twenty-four thousand, three hundred twenty-five".