165830125 has 8 divisors (see below), whose sum is σ = 206956152. Its totient is φ = 132664000.

The previous prime is 165830107. The next prime is 165830131. The reversal of 165830125 is 521038561.

It can be written as a sum of positive squares in 4 ways, for example, as 12996 + 165817129 = 114^2 + 12877^2 .

It is not a de Polignac number, because 165830125 - 2⁹ = 165829613 is a prime.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663196 + ... + 663445.

It is an arithmetic number, because the mean of its divisors is an integer number (25869519).

Almost surely, 2^165830125 is an apocalyptic number.

It is an amenable number.

165830125 is a deficient number, since it is larger than the sum of its proper divisors (41126027).

165830125 is an equidigital number, since it uses as much as digits as its factorization.

165830125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326656 (or 1326646 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 165830125 is about 12877.5046107544. The cubic root of 165830125 is about 549.3989301344.

Adding to 165830125 its reverse (521038561), we get a palindrome (686868686).

The spelling of 165830125 in words is "one hundred sixty-five million, eight hundred thirty thousand, one hundred twenty-five".