128072325 has 12 divisors (see below), whose sum is σ = 211746368. Its totient is φ = 68305200.

The previous prime is 128072317. The next prime is 128072341. The reversal of 128072325 is 523270821.

It is not a de Polignac number, because 128072325 - 2³ = 128072317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128072292 and 128072301.

It is a congruent number.

It is an unprimeable number.

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, 853741 + ... + 853890.

Almost surely, 2^128072325 is an apocalyptic number.

128072325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128072325 is a deficient number, since it is larger than the sum of its proper divisors (83674043).

128072325 is a wasteful number, since it uses less digits than its factorization.

128072325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707644 (or 1707639 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 128072325 is about 11316.9043912194. The cubic root of 128072325 is about 504.0633227001.

The spelling of 128072325 in words is "one hundred twenty-eight million, seventy-two thousand, three hundred twenty-five".