128169325 has 12 divisors (see below), whose sum is σ = 161304160. Its totient is φ = 101003760.

The previous prime is 128169311. The next prime is 128169359. The reversal of 128169325 is 523961821.

It is not a de Polignac number, because 128169325 - 2¹³ = 128161133 is a prime.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 36585 + ... + 39934.

Almost surely, 2^128169325 is an apocalyptic number.

It is an amenable number.

128169325 is a deficient number, since it is larger than the sum of its proper divisors (33134835).

128169325 is an equidigital number, since it uses as much as digits as its factorization.

128169325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76596 (or 76591 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 128169325 is about 11321.1892043195. The cubic root of 128169325 is about 504.1905471769.

The spelling of 128169325 in words is "one hundred twenty-eight million, one hundred sixty-nine thousand, three hundred twenty-five".