165103604325 has 144 divisors (see below), whose sum is σ = 347373748800. Its totient is φ = 74063308800.

The previous prime is 165103604299. The next prime is 165103604327. The reversal of 165103604325 is 523406301561.

165103604325 is a `hidden beast` number, since 1 + 6 + 5 + 10 + 3 + 604 + 32 + 5 = 666.

It is not a de Polignac number, because 165103604325 - 2¹² = 165103600229 is a prime.

It is a super-2 number, since 2×165103604325² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165103604325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165103604327) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 2449171 + ... + 2515679.

It is an arithmetic number, because the mean of its divisors is an integer number (2412317700).

Almost surely, 2^165103604325 is an apocalyptic number.

165103604325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165103604325 is an abundant number, since it is smaller than the sum of its proper divisors (182270144475).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165103604325 is a wasteful number, since it uses less digits than its factorization.

165103604325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66612 (or 66604 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 165103604325 its reverse (523406301561), we get a palindrome (688509905886).

The spelling of 165103604325 in words is "one hundred sixty-five billion, one hundred three million, six hundred four thousand, three hundred twenty-five".