13985725 has 24 divisors (see below), whose sum is σ = 19498752. Its totient is φ = 9873600.

The previous prime is 13985711. The next prime is 13985731. The reversal of 13985725 is 52758931.

It is not a de Polignac number, because 13985725 - 2⁷ = 13985597 is a prime.

It is a congruent number.

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, 6540 + ... + 8410.

It is an arithmetic number, because the mean of its divisors is an integer number (812448).

Almost surely, 2^13985725 is an apocalyptic number.

It is an amenable number.

13985725 is a deficient number, since it is larger than the sum of its proper divisors (5513027).

13985725 is a wasteful number, since it uses less digits than its factorization.

13985725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1912 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 13985725 is about 3739.7493231499. The cubic root of 13985725 is about 240.9322824152.

The spelling of 13985725 in words is "thirteen million, nine hundred eighty-five thousand, seven hundred twenty-five".