13891425 has 24 divisors (see below), whose sum is σ = 23968704. Its totient is φ = 7085760.

The previous prime is 13891399. The next prime is 13891433. The reversal of 13891425 is 52419831.

It is not a de Polignac number, because 13891425 - 2¹¹ = 13889377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2302 + ... + 5751.

It is an arithmetic number, because the mean of its divisors is an integer number (998696).

Almost surely, 2^13891425 is an apocalyptic number.

13891425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13891425 is a deficient number, since it is larger than the sum of its proper divisors (10077279).

13891425 is a wasteful number, since it uses less digits than its factorization.

13891425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8089 (or 8084 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 13891425 is about 3727.1202019790. The cubic root of 13891425 is about 240.3895583148.

The spelling of 13891425 in words is "thirteen million, eight hundred ninety-one thousand, four hundred twenty-five".