6505210625 has 10 divisors (see below), whose sum is σ = 8128911978. Its totient is φ = 5204168000.

The previous prime is 6505210553. The next prime is 6505210651. The reversal of 6505210625 is 5260125056.

6505210625 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 646379776 + 5858830849 = 25424^2 + 76543^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6505210625 is a prime.

It is a super-2 number, since 2×6505210625² = 84635530551225781250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6505210591 and 6505210600.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5203544 + ... + 5204793.

Almost surely, 2^6505210625 is an apocalyptic number.

It is an amenable number.

6505210625 is a deficient number, since it is larger than the sum of its proper divisors (1623701353).

6505210625 is an equidigital number, since it uses as much as digits as its factorization.

6505210625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10408357 (or 10408342 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 6505210625 is about 80654.8859338354. The cubic root of 6505210625 is about 1866.7541302378.

The spelling of 6505210625 in words is "six billion, five hundred five million, two hundred ten thousand, six hundred twenty-five".