64715162840225 has 6 divisors (see below), whose sum is σ = 80246801921910. Its totient is φ = 51772130272160.

The previous prime is 64715162840171. The next prime is 64715162840281. The reversal of 64715162840225 is 52204826151746.

It can be written as a sum of positive squares in 3 ways, for example, as 247238667361 + 64467924172864 = 497231^2 + 8029192^2 .

It is not a de Polignac number, because 64715162840225 - 2¹⁸ = 64715162578081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1294303256780 + ... + 1294303256829.

It is an arithmetic number, because the mean of its divisors is an integer number (13374466986985).

Almost surely, 2^{64715162840225} is an apocalyptic number.

It is an amenable number.

64715162840225 is a deficient number, since it is larger than the sum of its proper divisors (15531639081685).

64715162840225 is a wasteful number, since it uses less digits than its factorization.

64715162840225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588606513619 (or 2588606513614 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 64715162840225 in words is "sixty-four trillion, seven hundred fifteen billion, one hundred sixty-two million, eight hundred forty thousand, two hundred twenty-five".