6505678625 has 24 divisors (see below), whose sum is σ = 8205448680. Its totient is φ = 5149332000.

The previous prime is 6505678607. The next prime is 6505678709. The reversal of 6505678625 is 5268765056.

It can be written as a sum of positive squares in 4 ways, for example, as 80694289 + 6424984336 = 8983^2 + 80156^2 .

It is not a de Polignac number, because 6505678625 - 2⁸ = 6505678369 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9414530 + ... + 9415220.

It is an arithmetic number, because the mean of its divisors is an integer number (341893695).

Almost surely, 2^6505678625 is an apocalyptic number.

It is an amenable number.

6505678625 is a deficient number, since it is larger than the sum of its proper divisors (1699770055).

6505678625 is an frugal number, since it uses more digits than its factorization.

6505678625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 50.

The square root of 6505678625 is about 80657.7871318077. The cubic root of 6505678625 is about 1866.7988953773.

The spelling of 6505678625 in words is "six billion, five hundred five million, six hundred seventy-eight thousand, six hundred twenty-five".