165413125 has 40 divisors (see below), whose sum is σ = 222228864. Its totient is φ = 122760000.

The previous prime is 165413093. The next prime is 165413137. The reversal of 165413125 is 521314561.

It is not a de Polignac number, because 165413125 - 2⁵ = 165413093 is a prime.

It is a super-3 number, since 3×165413125³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165413093 and 165413102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 531720 + ... + 532030.

Almost surely, 2^165413125 is an apocalyptic number.

It is an amenable number.

165413125 is a deficient number, since it is larger than the sum of its proper divisors (56815739).

165413125 is an equidigital number, since it uses as much as digits as its factorization.

165413125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 376 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 165413125 is about 12861.3033942910. The cubic root of 165413125 is about 548.9380334682.

Adding to 165413125 its reverse (521314561), we get a palindrome (686727686).

The spelling of 165413125 in words is "one hundred sixty-five million, four hundred thirteen thousand, one hundred twenty-five".