128196025 has 12 divisors (see below), whose sum is σ = 162346752. Its totient is φ = 100373840.

The previous prime is 128196023. The next prime is 128196071. The reversal of 128196025 is 520691821.

It is not a de Polignac number, because 128196025 - 2¹ = 128196023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128196023) 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, 53377 + ... + 55726.

It is an arithmetic number, because the mean of its divisors is an integer number (13528896).

Almost surely, 2^128196025 is an apocalyptic number.

It is an amenable number.

128196025 is a deficient number, since it is larger than the sum of its proper divisors (34150727).

128196025 is a wasteful number, since it uses less digits than its factorization.

128196025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109160 (or 109155 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 128196025 is about 11322.3683476559. The cubic root of 128196025 is about 504.2255554311.

The spelling of 128196025 in words is "one hundred twenty-eight million, one hundred ninety-six thousand, twenty-five".