128348225 has 12 divisors (see below), whose sum is σ = 160563756. Its totient is φ = 101767680.

The previous prime is 128348221. The next prime is 128348237. The reversal of 128348225 is 522843821.

It can be written as a sum of positive squares in 6 ways, for example, as 1628176 + 126720049 = 1276^2 + 11257^2 .

It is not a de Polignac number, because 128348225 - 2² = 128348221 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 (128348221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19892 + ... + 25541.

It is an arithmetic number, because the mean of its divisors is an integer number (13380313).

Almost surely, 2^128348225 is an apocalyptic number.

It is an amenable number.

128348225 is a deficient number, since it is larger than the sum of its proper divisors (32215531).

128348225 is a wasteful number, since it uses less digits than its factorization.

128348225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45556 (or 45551 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 128348225 is about 11329.0875625533. The cubic root of 128348225 is about 504.4250228186.

The spelling of 128348225 in words is "one hundred twenty-eight million, three hundred forty-eight thousand, two hundred twenty-five".