128825804955 has 16 divisors (see below), whose sum is σ = 206362951200. Its totient is φ = 68626541568.

The previous prime is 128825804953. The next prime is 128825805001. The reversal of 128825804955 is 559408528821.

It is not a de Polignac number, because 128825804955 - 2¹ = 128825804953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128825804895 and 128825804904.

It is not an unprimeable number, because it can be changed into a prime (128825804953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5021430 + ... + 5047019.

It is an arithmetic number, because the mean of its divisors is an integer number (12897684450).

Almost surely, 2^128825804955 is an apocalyptic number.

128825804955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128825804955 is a deficient number, since it is larger than the sum of its proper divisors (77537146245).

128825804955 is a wasteful number, since it uses less digits than its factorization.

128825804955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10069310.

The product of its (nonzero) digits is 9216000, while the sum is 57.

The spelling of 128825804955 in words is "one hundred twenty-eight billion, eight hundred twenty-five million, eight hundred four thousand, nine hundred fifty-five".