128378325 has 24 divisors (see below), whose sum is σ = 212768128. Its totient is φ = 68302080.

The previous prime is 128378323. The next prime is 128378351. The reversal of 128378325 is 523873821.

It is not a de Polignac number, because 128378325 - 2¹ = 128378323 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 (128378321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32877 + ... + 36573.

Almost surely, 2^128378325 is an apocalyptic number.

128378325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128378325 is a deficient number, since it is larger than the sum of its proper divisors (84389803).

128378325 is a wasteful number, since it uses less digits than its factorization.

128378325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173 (or 4168 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 128378325 is about 11330.4159235220. The cubic root of 128378325 is about 504.4644520262.

The spelling of 128378325 in words is "one hundred twenty-eight million, three hundred seventy-eight thousand, three hundred twenty-five".