128425559 has 2 divisors, whose sum is σ = 128425560. Its totient is φ = 128425558.

The previous prime is 128425547. The next prime is 128425597. The reversal of 128425559 is 955524821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128425559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128425459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64212779 + 64212780.

It is an arithmetic number, because the mean of its divisors is an integer number (64212780).

Almost surely, 2^128425559 is an apocalyptic number.

128425559 is a deficient number, since it is larger than the sum of its proper divisors (1).

128425559 is an equidigital number, since it uses as much as digits as its factorization.

128425559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 41.

The square root of 128425559 is about 11332.5001213325. The cubic root of 128425559 is about 504.5263133314.

The spelling of 128425559 in words is "one hundred twenty-eight million, four hundred twenty-five thousand, five hundred fifty-nine".