13808561025 has 48 divisors (see below), whose sum is σ = 26459163648. Its totient is φ = 6223560000.

The previous prime is 13808560993. The next prime is 13808561027. The reversal of 13808561025 is 52016580831.

It is not a de Polignac number, because 13808561025 - 2⁵ = 13808560993 is a prime.

It is a super-2 number, since 2×13808561025² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13808561027) 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, 147951 + ... + 222500.

It is an arithmetic number, because the mean of its divisors is an integer number (551232576).

Almost surely, 2^13808561025 is an apocalyptic number.

13808561025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13808561025 is a deficient number, since it is larger than the sum of its proper divisors (12650602623).

13808561025 is a wasteful number, since it uses less digits than its factorization.

13808561025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370542 (or 370537 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 13808561025 in words is "thirteen billion, eight hundred eight million, five hundred sixty-one thousand, twenty-five".