13861625 has 16 divisors (see below), whose sum is σ = 17426448. Its totient is φ = 11008000.

The previous prime is 13861607. The next prime is 13861633. The reversal of 13861625 is 52616831.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 238144 + 13623481 = 488^2 + 3691^2 .

It is not a de Polignac number, because 13861625 - 2⁸ = 13861369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13861591 and 13861600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21305 + ... + 21945.

It is an arithmetic number, because the mean of its divisors is an integer number (1089153).

Almost surely, 2^13861625 is an apocalyptic number.

It is an amenable number.

13861625 is a deficient number, since it is larger than the sum of its proper divisors (3564823).

13861625 is an equidigital number, since it uses as much as digits as its factorization.

13861625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 819 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 13861625 is about 3723.1203311201. The cubic root of 13861625 is about 240.2175400270.

The spelling of 13861625 in words is "thirteen million, eight hundred sixty-one thousand, six hundred twenty-five".