128222025725 has 12 divisors (see below), whose sum is σ = 162692878656. Its totient is φ = 100192093680.

The previous prime is 128222025713. The next prime is 128222025739. The reversal of 128222025725 is 527520222821.

It is a happy number.

It is not a de Polignac number, because 128222025725 - 2¹⁴ = 128222009341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59637077 + ... + 59639226.

It is an arithmetic number, because the mean of its divisors is an integer number (13557739888).

Almost surely, 2^128222025725 is an apocalyptic number.

It is an amenable number.

128222025725 is a deficient number, since it is larger than the sum of its proper divisors (34470852931).

128222025725 is a wasteful number, since it uses less digits than its factorization.

128222025725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119276356 (or 119276351 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 38.

The spelling of 128222025725 in words is "one hundred twenty-eight billion, two hundred twenty-two million, twenty-five thousand, seven hundred twenty-five".