128025077 has 2 divisors, whose sum is σ = 128025078. Its totient is φ = 128025076.

The previous prime is 128025019. The next prime is 128025089. The reversal of 128025077 is 770520821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108035236 + 19989841 = 10394^2 + 4471^2 .

It is a cyclic number.

It is not a de Polignac number, because 128025077 - 2⁶ = 128025013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128027077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64012538 + 64012539.

It is an arithmetic number, because the mean of its divisors is an integer number (64012539).

Almost surely, 2^128025077 is an apocalyptic number.

It is an amenable number.

128025077 is a deficient number, since it is larger than the sum of its proper divisors (1).

128025077 is an equidigital number, since it uses as much as digits as its factorization.

128025077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 128025077 is about 11314.8167020063. The cubic root of 128025077 is about 504.0013293091.

Adding to 128025077 its reverse (770520821), we get a palindrome (898545898).

The spelling of 128025077 in words is "one hundred twenty-eight million, twenty-five thousand, seventy-seven".