13125816 has 48 divisors (see below), whose sum is σ = 38783160. Its totient is φ = 3977280.

The previous prime is 13125811. The next prime is 13125817. The reversal of 13125816 is 61852131.

It is a self number, because there is not a number n which added to its sum of digits gives 13125816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7495 + ... + 9078.

Almost surely, 2^13125816 is an apocalyptic number.

It is an amenable number.

13125816 is an abundant number, since it is smaller than the sum of its proper divisors (25657344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13125816 is a wasteful number, since it uses less digits than its factorization.

13125816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16596 (or 16589 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 13125816 is about 3622.9568034963. The cubic root of 13125816 is about 235.8895873441.

Adding to 13125816 its reverse (61852131), we get a palindrome (74977947).

The spelling of 13125816 in words is "thirteen million, one hundred twenty-five thousand, eight hundred sixteen".