128529325 has 12 divisors (see below), whose sum is σ = 159521908. Its totient is φ = 102729600.

The previous prime is 128529277. The next prime is 128529343. The reversal of 128529325 is 523925821.

It can be written as a sum of positive squares in 6 ways, for example, as 14915044 + 113614281 = 3862^2 + 10659^2 .

It is not a de Polignac number, because 128529325 - 2¹⁹ = 128005037 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42049 + ... + 45001.

Almost surely, 2^128529325 is an apocalyptic number.

It is an amenable number.

128529325 is a deficient number, since it is larger than the sum of its proper divisors (30992583).

128529325 is a wasteful number, since it uses less digits than its factorization.

128529325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704 (or 4699 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 128529325 is about 11337.0774452678. The cubic root of 128529325 is about 504.6621600795.

The spelling of 128529325 in words is "one hundred twenty-eight million, five hundred twenty-nine thousand, three hundred twenty-five".