165441425 has 24 divisors (see below), whose sum is σ = 213144096. Its totient is φ = 127290240.

The previous prime is 165441407. The next prime is 165441427. The reversal of 165441425 is 524144561.

It is not a de Polignac number, because 165441425 - 2⁶ = 165441361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165441391 and 165441400.

It is not an unprimeable number, because it can be changed into a prime (165441427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70877 + ... + 73173.

It is an arithmetic number, because the mean of its divisors is an integer number (8881004).

Almost surely, 2^165441425 is an apocalyptic number.

It is an amenable number.

165441425 is a deficient number, since it is larger than the sum of its proper divisors (47702671).

165441425 is a wasteful number, since it uses less digits than its factorization.

165441425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417 (or 2412 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 165441425 is about 12862.4035467715. The cubic root of 165441425 is about 548.9693370311.

Adding to 165441425 its reverse (524144561), we get a palindrome (689585986).

The spelling of 165441425 in words is "one hundred sixty-five million, four hundred forty-one thousand, four hundred twenty-five".