13986725 has 6 divisors (see below), whose sum is σ = 17343570. Its totient is φ = 11189360.

The previous prime is 13986697. The next prime is 13986743. The reversal of 13986725 is 52768931.

It can be written as a sum of positive squares in 3 ways, for example, as 2365444 + 11621281 = 1538^2 + 3409^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13986725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279710 + ... + 279759.

It is an arithmetic number, because the mean of its divisors is an integer number (2890595).

Almost surely, 2^13986725 is an apocalyptic number.

It is an amenable number.

13986725 is a deficient number, since it is larger than the sum of its proper divisors (3356845).

13986725 is an equidigital number, since it uses as much as digits as its factorization.

13986725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559479 (or 559474 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 13986725 is about 3739.8830195609. The cubic root of 13986725 is about 240.9380246164.

The spelling of 13986725 in words is "thirteen million, nine hundred eighty-six thousand, seven hundred twenty-five".