13111425520 has 40 divisors (see below), whose sum is σ = 30498623856. Its totient is φ = 5242065408.

The previous prime is 13111425499. The next prime is 13111425533. The reversal of 13111425520 is 2552411131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134179 + ... + 210301.

Almost surely, 2^13111425520 is an apocalyptic number.

13111425520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111425520 is an abundant number, since it is smaller than the sum of its proper divisors (17387198336).

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

13111425520 is a wasteful number, since it uses less digits than its factorization.

13111425520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78289 (or 78283 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 13111425520 its reverse (2552411131), we get a palindrome (15663836651).

The spelling of 13111425520 in words is "thirteen billion, one hundred eleven million, four hundred twenty-five thousand, five hundred twenty".