13608025 has 12 divisors (see below), whose sum is σ = 17026812. Its totient is φ = 10787840.

The previous prime is 13608013. The next prime is 13608029. The reversal of 13608025 is 52080631.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5745609 + 7862416 = 2397^2 + 2804^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13608025 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13608029) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 417 + ... + 5233.

It is an arithmetic number, because the mean of its divisors is an integer number (1418901).

Almost surely, 2^13608025 is an apocalyptic number.

It is an amenable number.

13608025 is a deficient number, since it is larger than the sum of its proper divisors (3418787).

13608025 is a wasteful number, since it uses less digits than its factorization.

13608025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940 (or 4935 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 13608025 is about 3688.9056642858. The cubic root of 13608025 is about 238.7435786766.

Adding to 13608025 its reverse (52080631), we get a palindrome (65688656).

The spelling of 13608025 in words is "thirteen million, six hundred eight thousand, twenty-five".