13211506625 has 16 divisors (see below), whose sum is σ = 16492286928. Its totient is φ = 10566432000.

The previous prime is 13211506591. The next prime is 13211506631. The reversal of 13211506625 is 52660511231.

It can be written as a sum of positive squares in 8 ways, for example, as 9725312689 + 3486193936 = 98617^2 + 59044^2 .

It is not a de Polignac number, because 13211506625 - 2⁸ = 13211506369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13211506591 and 13211506600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558539 + ... + 581711.

It is an arithmetic number, because the mean of its divisors is an integer number (1030767933).

Almost surely, 2^13211506625 is an apocalyptic number.

It is an amenable number.

13211506625 is a deficient number, since it is larger than the sum of its proper divisors (3280780303).

13211506625 is an equidigital number, since it uses as much as digits as its factorization.

13211506625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27749 (or 27739 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 13211506625 in words is "thirteen billion, two hundred eleven million, five hundred six thousand, six hundred twenty-five".