64706432714225 has 6 divisors (see below), whose sum is σ = 80235976565670. Its totient is φ = 51765146171360.

The previous prime is 64706432714207. The next prime is 64706432714243. The reversal of 64706432714225 is 52241723460746.

It is an interprime number because it is at equal distance from previous prime (64706432714207) and next prime (64706432714243).

It can be written as a sum of positive squares in 3 ways, for example, as 10132399358449 + 54574033355776 = 3183143^2 + 7387424^2 .

It is a de Polignac number, because none of the positive numbers 2^k-64706432714225 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1294128654260 + ... + 1294128654309.

It is an arithmetic number, because the mean of its divisors is an integer number (13372662760945).

Almost surely, 2^{64706432714225} is an apocalyptic number.

It is an amenable number.

64706432714225 is a deficient number, since it is larger than the sum of its proper divisors (15529543851445).

64706432714225 is a wasteful number, since it uses less digits than its factorization.

64706432714225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588257308579 (or 2588257308574 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 53.

The spelling of 64706432714225 in words is "sixty-four trillion, seven hundred six billion, four hundred thirty-two million, seven hundred fourteen thousand, two hundred twenty-five".