13889025 has 18 divisors (see below), whose sum is σ = 24877190. Its totient is φ = 7407360.

The previous prime is 13888997. The next prime is 13889027. The reversal of 13889025 is 52098831.

13889025 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 4210704 + 9678321 = 2052^2 + 3111^2 .

It is not a de Polignac number, because 13889025 - 2⁸ = 13888769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13889027) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 30640 + ... + 31089.

Almost surely, 2^13889025 is an apocalyptic number.

13889025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13889025 is a deficient number, since it is larger than the sum of its proper divisors (10988165).

13889025 is a wasteful number, since it uses less digits than its factorization.

13889025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61745 (or 61737 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 13889025 is about 3726.7982236767. The cubic root of 13889025 is about 240.3757136068.

The spelling of 13889025 in words is "thirteen million, eight hundred eighty-nine thousand, twenty-five".