13887625 has 16 divisors (see below), whose sum is σ = 17441424. Its totient is φ = 11040000.

The previous prime is 13887611. The next prime is 13887641. The reversal of 13887625 is 52678831.

13887625 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3984016 + 9903609 = 1996^2 + 3147^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13887625 is a prime.

It is a super-2 number, since 2×13887625² = 385732256281250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29895 + ... + 30355.

It is an arithmetic number, because the mean of its divisors is an integer number (1090089).

Almost surely, 2^13887625 is an apocalyptic number.

It is an amenable number.

13887625 is a deficient number, since it is larger than the sum of its proper divisors (3553799).

13887625 is an equidigital number, since it uses as much as digits as its factorization.

13887625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717 (or 707 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 13887625 is about 3726.6103901535. The cubic root of 13887625 is about 240.3676367906.

The spelling of 13887625 in words is "thirteen million, eight hundred eighty-seven thousand, six hundred twenty-five".