13040440625 has 48 divisors (see below), whose sum is σ = 16927916544. Its totient is φ = 10034400000.

The previous prime is 13040440591. The next prime is 13040440627. The reversal of 13040440625 is 52604404031.

It is not a de Polignac number, because 13040440625 - 2⁶ = 13040440561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13040440627) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21990329 + ... + 21990921.

It is an arithmetic number, because the mean of its divisors is an integer number (352664928).

Almost surely, 2^13040440625 is an apocalyptic number.

It is an amenable number.

13040440625 is a deficient number, since it is larger than the sum of its proper divisors (3887475919).

13040440625 is an frugal number, since it uses more digits than its factorization.

13040440625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 13040440625 its reverse (52604404031), we get a palindrome (65644844656).

The spelling of 13040440625 in words is "thirteen billion, forty million, four hundred forty thousand, six hundred twenty-five".