165325425 has 48 divisors (see below), whose sum is σ = 291981312. Its totient is φ = 82252800.

The previous prime is 165325409. The next prime is 165325427. The reversal of 165325425 is 524523561.

It is not a de Polignac number, because 165325425 - 2⁴ = 165325409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165325427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161415 + ... + 162435.

It is an arithmetic number, because the mean of its divisors is an integer number (6082944).

Almost surely, 2^165325425 is an apocalyptic number.

165325425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165325425 is a deficient number, since it is larger than the sum of its proper divisors (126655887).

165325425 is a wasteful number, since it uses less digits than its factorization.

165325425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178 (or 1173 counting only the distinct ones).

The product of its digits is 36000, while the sum is 33.

The square root of 165325425 is about 12857.8934899928. The cubic root of 165325425 is about 548.8410029249.

Adding to 165325425 its reverse (524523561), we get a palindrome (689848986).

The spelling of 165325425 in words is "one hundred sixty-five million, three hundred twenty-five thousand, four hundred twenty-five".