13687425 has 36 divisors (see below), whose sum is σ = 24760320. Its totient is φ = 7227360.

The previous prime is 13687423. The next prime is 13687439. The reversal of 13687425 is 52478631.

It is not a de Polignac number, because 13687425 - 2¹ = 13687423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13687425.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13687423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28336 + ... + 28814.

Almost surely, 2^13687425 is an apocalyptic number.

13687425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13687425 is a deficient number, since it is larger than the sum of its proper divisors (11072895).

13687425 is a wasteful number, since it uses less digits than its factorization.

13687425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 614 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 13687425 is about 3699.6520106626. The cubic root of 13687425 is about 239.2070182186.

The spelling of 13687425 in words is "thirteen million, six hundred eighty-seven thousand, four hundred twenty-five".