13210860625 has 10 divisors (see below), whose sum is σ = 16508292218. Its totient is φ = 10568688000.

The previous prime is 13210860617. The next prime is 13210860629. The reversal of 13210860625 is 52606801231.

It can be written as a sum of positive squares in 5 ways, for example, as 1226960784 + 11983899841 = 35028^2 + 109471^2 .

It is not a de Polignac number, because 13210860625 - 2³ = 13210860617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13210860629) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10568064 + ... + 10569313.

Almost surely, 2^13210860625 is an apocalyptic number.

It is an amenable number.

13210860625 is a deficient number, since it is larger than the sum of its proper divisors (3297431593).

13210860625 is an frugal number, since it uses more digits than its factorization.

13210860625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21137397 (or 21137382 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 13210860625 in words is "thirteen billion, two hundred ten million, eight hundred sixty thousand, six hundred twenty-five".