13681025 has 6 divisors (see below), whose sum is σ = 16964502. Its totient is φ = 10944800.

The previous prime is 13680949. The next prime is 13681033. The reversal of 13681025 is 52018631.

It can be written as a sum of positive squares in 3 ways, for example, as 190096 + 13490929 = 436^2 + 3673^2 .

It is not a de Polignac number, because 13681025 - 2¹⁰ = 13680001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13680985 and 13681003.

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, 273596 + ... + 273645.

It is an arithmetic number, because the mean of its divisors is an integer number (2827417).

Almost surely, 2^13681025 is an apocalyptic number.

It is an amenable number.

13681025 is a deficient number, since it is larger than the sum of its proper divisors (3283477).

13681025 is an equidigital number, since it uses as much as digits as its factorization.

13681025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547251 (or 547246 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 13681025 is about 3698.7869633165. The cubic root of 13681025 is about 239.1697294032.

Adding to 13681025 its reverse (52018631), we get a palindrome (65699656).

The spelling of 13681025 in words is "thirteen million, six hundred eighty-one thousand, twenty-five".