64025392609 has 2 divisors, whose sum is σ = 64025392610. Its totient is φ = 64025392608.

The previous prime is 64025392597. The next prime is 64025392619. The reversal of 64025392609 is 90629352046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51757615009 + 12267777600 = 227503^2 + 110760^2 .

It is a cyclic number.

It is not a de Polignac number, because 64025392609 - 2⁵ = 64025392577 is a prime.

It is not a weakly prime, because it can be changed into another prime (64025392619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32012696304 + 32012696305.

It is an arithmetic number, because the mean of its divisors is an integer number (32012696305).

Almost surely, 2^64025392609 is an apocalyptic number.

It is an amenable number.

64025392609 is a deficient number, since it is larger than the sum of its proper divisors (1).

64025392609 is an equidigital number, since it uses as much as digits as its factorization.

64025392609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 64025392609 in words is "sixty-four billion, twenty-five million, three hundred ninety-two thousand, six hundred nine".