128825804895 has 32 divisors (see below), whose sum is σ = 208758477312. Its totient is φ = 67832422272.

The previous prime is 128825804879. The next prime is 128825804917. The reversal of 128825804895 is 598408528821.

It is not a de Polignac number, because 128825804895 - 2⁴ = 128825804879 is a prime.

It is a super-2 number, since 2×128825804895² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 333294 + ... + 607236.

It is an arithmetic number, because the mean of its divisors is an integer number (6523702416).

Almost surely, 2^128825804895 is an apocalyptic number.

128825804895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128825804895 is a deficient number, since it is larger than the sum of its proper divisors (79932672417).

128825804895 is a wasteful number, since it uses less digits than its factorization.

128825804895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274351.

The product of its (nonzero) digits is 14745600, while the sum is 60.

The spelling of 128825804895 in words is "one hundred twenty-eight billion, eight hundred twenty-five million, eight hundred four thousand, eight hundred ninety-five".