64025128469 has 2 divisors, whose sum is σ = 64025128470. Its totient is φ = 64025128468.

The previous prime is 64025128429. The next prime is 64025128499. The reversal of 64025128469 is 96482152046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44379742225 + 19645386244 = 210665^2 + 140162^2 .

It is a cyclic number.

It is not a de Polignac number, because 64025128469 - 2²⁰ = 64024079893 is a prime.

It is a super-2 number, since 2×64025128469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64025128429) 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, 32012564234 + 32012564235.

It is an arithmetic number, because the mean of its divisors is an integer number (32012564235).

Almost surely, 2^64025128469 is an apocalyptic number.

It is an amenable number.

64025128469 is a deficient number, since it is larger than the sum of its proper divisors (1).

64025128469 is an equidigital number, since it uses as much as digits as its factorization.

64025128469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 64025128469 in words is "sixty-four billion, twenty-five million, one hundred twenty-eight thousand, four hundred sixty-nine".