165425138 has 8 divisors (see below), whose sum is σ = 248393088. Its totient is φ = 82627444.

The previous prime is 165425111. The next prime is 165425167. The reversal of 165425138 is 831524561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 165425098 and 165425107.

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 3 ways as a sum of consecutive naturals, for example, 40106 + ... + 44037.

It is an arithmetic number, because the mean of its divisors is an integer number (31049136).

Almost surely, 2^165425138 is an apocalyptic number.

165425138 is a deficient number, since it is larger than the sum of its proper divisors (82967950).

165425138 is an equidigital number, since it uses as much as digits as its factorization.

165425138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85128.

The product of its digits is 28800, while the sum is 35.

The square root of 165425138 is about 12861.7704069074. The cubic root of 165425138 is about 548.9513218795.

Adding to 165425138 its reverse (831524561), we get a palindrome (996949699).

The spelling of 165425138 in words is "one hundred sixty-five million, four hundred twenty-five thousand, one hundred thirty-eight".