128025280 has 56 divisors (see below), whose sum is σ = 310073040. Its totient is φ = 50334720.

The previous prime is 128025269. The next prime is 128025281. The reversal of 128025280 is 82520821.

It is not an unprimeable number, because it can be changed into a prime (128025281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15490 + ... + 22270.

Almost surely, 2^128025280 is an apocalyptic number.

128025280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128025280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155036520).

128025280 is an abundant number, since it is smaller than the sum of its proper divisors (182047760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128025280 is an equidigital number, since it uses as much as digits as its factorization.

128025280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6857 (or 6847 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 128025280 is about 11314.8256725413. The cubic root of 128025280 is about 504.0015956950.

The spelling of 128025280 in words is "one hundred twenty-eight million, twenty-five thousand, two hundred eighty".