13507578825 has 24 divisors (see below), whose sum is σ = 24050419008. Its totient is φ = 6649884480.

The previous prime is 13507578823. The next prime is 13507578839. The reversal of 13507578825 is 52887570531.

13507578825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13507578825 - 2¹ = 13507578823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13507578823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6925989 + ... + 6927938.

It is an arithmetic number, because the mean of its divisors is an integer number (1002100792).

Almost surely, 2^13507578825 is an apocalyptic number.

13507578825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13507578825 is a deficient number, since it is larger than the sum of its proper divisors (10542840183).

13507578825 is a wasteful number, since it uses less digits than its factorization.

13507578825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13853953 (or 13853948 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 51.

The spelling of 13507578825 in words is "thirteen billion, five hundred seven million, five hundred seventy-eight thousand, eight hundred twenty-five".