13987325 has 24 divisors (see below), whose sum is σ = 19924320. Its totient is φ = 9633600.

The previous prime is 13987321. The next prime is 13987333. The reversal of 13987325 is 52378931.

It is not a de Polignac number, because 13987325 - 2² = 13987321 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13987321) 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, 3887 + ... + 6563.

It is an arithmetic number, because the mean of its divisors is an integer number (830180).

Almost surely, 2^13987325 is an apocalyptic number.

It is an amenable number.

13987325 is a deficient number, since it is larger than the sum of its proper divisors (5936995).

13987325 is a wasteful number, since it uses less digits than its factorization.

13987325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717 (or 2712 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 13987325 is about 3739.9632351134. The cubic root of 13987325 is about 240.9414698057.

The spelling of 13987325 in words is "thirteen million, nine hundred eighty-seven thousand, three hundred twenty-five".