13662625 has 16 divisors (see below), whose sum is σ = 17643600. Its totient is φ = 10550400.

The previous prime is 13662619. The next prime is 13662629. The reversal of 13662625 is 52626631.

It can be written as a sum of positive squares in 8 ways, for example, as 2211169 + 11451456 = 1487^2 + 3384^2 .

It is not a de Polignac number, because 13662625 - 2¹⁵ = 13629857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13662629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1741 + ... + 5509.

It is an arithmetic number, because the mean of its divisors is an integer number (1102725).

Almost surely, 2^13662625 is an apocalyptic number.

It is an amenable number.

13662625 is a deficient number, since it is larger than the sum of its proper divisors (3980975).

13662625 is an equidigital number, since it uses as much as digits as its factorization.

13662625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813 (or 3803 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 13662625 is about 3696.2988245000. The cubic root of 13662625 is about 239.0624592393.

The spelling of 13662625 in words is "thirteen million, six hundred sixty-two thousand, six hundred twenty-five".