128750390025 has 24 divisors (see below), whose sum is σ = 215865451584. Its totient is φ = 67699732800.

The previous prime is 128750389969. The next prime is 128750390057. The reversal of 128750390025 is 520093057821.

It is a happy number.

It is not a de Polignac number, because 128750390025 - 2¹⁴ = 128750373641 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12083914 + ... + 12094563.

It is an arithmetic number, because the mean of its divisors is an integer number (8994393816).

Almost surely, 2^128750390025 is an apocalyptic number.

128750390025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128750390025 is a deficient number, since it is larger than the sum of its proper divisors (87115061559).

128750390025 is a wasteful number, since it uses less digits than its factorization.

128750390025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24178561 (or 24178556 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 128750390025 in words is "one hundred twenty-eight billion, seven hundred fifty million, three hundred ninety thousand, twenty-five".