165016325 has 12 divisors (see below), whose sum is σ = 206649348. Its totient is φ = 130704000.

The previous prime is 165016321. The next prime is 165016343. The reversal of 165016325 is 523610561.

It can be written as a sum of positive squares in 6 ways, for example, as 22118209 + 142898116 = 4703^2 + 11954^2 .

It is not a de Polignac number, because 165016325 - 2² = 165016321 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165016321) 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, 30152 + ... + 35201.

It is an arithmetic number, because the mean of its divisors is an integer number (17220779).

Almost surely, 2^165016325 is an apocalyptic number.

It is an amenable number.

165016325 is a deficient number, since it is larger than the sum of its proper divisors (41633023).

165016325 is a wasteful number, since it uses less digits than its factorization.

165016325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65464 (or 65459 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 165016325 is about 12845.8680127113. The cubic root of 165016325 is about 548.4987434279.

Adding to 165016325 its reverse (523610561), we get a palindrome (688626886).

The spelling of 165016325 in words is "one hundred sixty-five million, sixteen thousand, three hundred twenty-five".