128485265 has 8 divisors (see below), whose sum is σ = 155397120. Its totient is φ = 101978352.

The previous prime is 128485261. The next prime is 128485271. The reversal of 128485265 is 562584821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128485265 - 2² = 128485261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128485261) 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 7 ways as a sum of consecutive naturals, for example, 100535 + ... + 101804.

It is an arithmetic number, because the mean of its divisors is an integer number (19424640).

Almost surely, 2^128485265 is an apocalyptic number.

It is an amenable number.

128485265 is a deficient number, since it is larger than the sum of its proper divisors (26911855).

128485265 is a wasteful number, since it uses less digits than its factorization.

128485265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202471.

The product of its digits is 153600, while the sum is 41.

The square root of 128485265 is about 11335.1340971336. The cubic root of 128485265 is about 504.6044872331.

The spelling of 128485265 in words is "one hundred twenty-eight million, four hundred eighty-five thousand, two hundred sixty-five".