128536325 has 6 divisors (see below), whose sum is σ = 159385074. Its totient is φ = 102829040.

The previous prime is 128536321. The next prime is 128536339. The reversal of 128536325 is 523635821.

It can be written as a sum of positive squares in 3 ways, for example, as 19061956 + 109474369 = 4366^2 + 10463^2 .

It is not a de Polignac number, because 128536325 - 2² = 128536321 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 (128536321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2570702 + ... + 2570751.

It is an arithmetic number, because the mean of its divisors is an integer number (26564179).

Almost surely, 2^128536325 is an apocalyptic number.

It is an amenable number.

128536325 is a deficient number, since it is larger than the sum of its proper divisors (30848749).

128536325 is an equidigital number, since it uses as much as digits as its factorization.

128536325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5141463 (or 5141458 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 128536325 is about 11337.3861626038. The cubic root of 128536325 is about 504.6713215970.

The spelling of 128536325 in words is "one hundred twenty-eight million, five hundred thirty-six thousand, three hundred twenty-five".