8464513345825 has 6 divisors (see below), whose sum is σ = 10495996548854. Its totient is φ = 6771610676640.

The previous prime is 8464513345819. The next prime is 8464513345867. The reversal of 8464513345825 is 5285433154648.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 940157126689 + 7524356219136 = 969617^2 + 2743056^2 .

It is not a de Polignac number, because 8464513345825 - 2⁵ = 8464513345793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8464513345825.

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, 169290266892 + ... + 169290266941.

Almost surely, 2^{8464513345825} is an apocalyptic number.

It is an amenable number.

8464513345825 is a deficient number, since it is larger than the sum of its proper divisors (2031483203029).

8464513345825 is a wasteful number, since it uses less digits than its factorization.

8464513345825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338580533843 (or 338580533838 counting only the distinct ones).

The product of its digits is 55296000, while the sum is 58.

The spelling of 8464513345825 in words is "eight trillion, four hundred sixty-four billion, five hundred thirteen million, three hundred forty-five thousand, eight hundred twenty-five".