128271125 has 12 divisors (see below), whose sum is σ = 160240548. Its totient is φ = 102515600.

The previous prime is 128271079. The next prime is 128271127. The reversal of 128271125 is 521172821.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 121925764 + 6345361 = 11042^2 + 2519^2 .

It is not a de Polignac number, because 128271125 - 2⁸ = 128270869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128271127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126119 + ... + 127131.

It is an arithmetic number, because the mean of its divisors is an integer number (13353379).

Almost surely, 2^128271125 is an apocalyptic number.

It is an amenable number.

128271125 is a deficient number, since it is larger than the sum of its proper divisors (31969423).

128271125 is an frugal number, since it uses more digits than its factorization.

128271125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041 (or 1018 counting only the distinct ones).

The product of its digits is 2240, while the sum is 29.

The square root of 128271125 is about 11325.6843060364. The cubic root of 128271125 is about 504.3239982835.

The spelling of 128271125 in words is "one hundred twenty-eight million, two hundred seventy-one thousand, one hundred twenty-five".