84457318625 has 8 divisors (see below), whose sum is σ = 105402733800. Its totient is φ = 67565854800.

The previous prime is 84457318619. The next prime is 84457318637. The reversal of 84457318625 is 52681375448.

It can be written as a sum of positive squares in 4 ways, for example, as 2533712896 + 81923605729 = 50336^2 + 286223^2 .

It is not a de Polignac number, because 84457318625 - 2²⁰ = 84456270049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337829150 + ... + 337829399.

It is an arithmetic number, because the mean of its divisors is an integer number (13175341725).

Almost surely, 2^84457318625 is an apocalyptic number.

It is an amenable number.

84457318625 is a deficient number, since it is larger than the sum of its proper divisors (20945415175).

84457318625 is an equidigital number, since it uses as much as digits as its factorization.

84457318625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675658564 (or 675658554 counting only the distinct ones).

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

The spelling of 84457318625 in words is "eighty-four billion, four hundred fifty-seven million, three hundred eighteen thousand, six hundred twenty-five".