128001025157 has 2 divisors, whose sum is σ = 128001025158. Its totient is φ = 128001025156.

The previous prime is 128001025123. The next prime is 128001025193. The reversal of 128001025157 is 751520100821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124288682116 + 3712343041 = 352546^2 + 60929^2 .

It is a cyclic number.

It is not a de Polignac number, because 128001025157 - 2²⁰ = 127999976581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128001025657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64000512578 + 64000512579.

It is an arithmetic number, because the mean of its divisors is an integer number (64000512579).

Almost surely, 2^128001025157 is an apocalyptic number.

It is an amenable number.

128001025157 is a deficient number, since it is larger than the sum of its proper divisors (1).

128001025157 is an equidigital number, since it uses as much as digits as its factorization.

128001025157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 32.

Adding to 128001025157 its reverse (751520100821), we get a palindrome (879521125978).

The spelling of 128001025157 in words is "one hundred twenty-eight billion, one million, twenty-five thousand, one hundred fifty-seven".