13699925 has 12 divisors (see below), whose sum is σ = 17069220. Its totient is φ = 10907520.

The previous prime is 13699921. The next prime is 13699949. The reversal of 13699925 is 52999631.

It can be written as a sum of positive squares in 6 ways, for example, as 552049 + 13147876 = 743^2 + 3626^2 .

It is not a de Polignac number, because 13699925 - 2² = 13699921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13699921) 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 11 ways as a sum of consecutive naturals, for example, 4529 + ... + 6921.

It is an arithmetic number, because the mean of its divisors is an integer number (1422435).

Almost surely, 2^13699925 is an apocalyptic number.

It is an amenable number.

13699925 is a deficient number, since it is larger than the sum of its proper divisors (3369295).

13699925 is a wasteful number, since it uses less digits than its factorization.

13699925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632 (or 2627 counting only the distinct ones).

The product of its digits is 131220, while the sum is 44.

The square root of 13699925 is about 3701.3409732150. The cubic root of 13699925 is about 239.2798144277.

The spelling of 13699925 in words is "thirteen million, six hundred ninety-nine thousand, nine hundred twenty-five".