128225697825 has 12 divisors (see below), whose sum is σ = 211999820528. Its totient is φ = 68387038800.

The previous prime is 128225697811. The next prime is 128225697827. The reversal of 128225697825 is 528796522821.

It is not a de Polignac number, because 128225697825 - 2⁵ = 128225697793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128225697827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 854837911 + ... + 854838060.

Almost surely, 2^128225697825 is an apocalyptic number.

128225697825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128225697825 is a deficient number, since it is larger than the sum of its proper divisors (83774122703).

128225697825 is a wasteful number, since it uses less digits than its factorization.

128225697825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709675984 (or 1709675979 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 57.

The spelling of 128225697825 in words is "one hundred twenty-eight billion, two hundred twenty-five million, six hundred ninety-seven thousand, eight hundred twenty-five".