13691325 has 24 divisors (see below), whose sum is σ = 23623488. Its totient is φ = 6983680.

The previous prime is 13691323. The next prime is 13691347. The reversal of 13691325 is 52319631.

It is not a de Polignac number, because 13691325 - 2¹ = 13691323 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13691292 and 13691301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13691323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2244 + ... + 5693.

It is an arithmetic number, because the mean of its divisors is an integer number (984312).

Almost surely, 2^13691325 is an apocalyptic number.

13691325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13691325 is a deficient number, since it is larger than the sum of its proper divisors (9932163).

13691325 is a wasteful number, since it uses less digits than its factorization.

13691325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7973 (or 7968 counting only the distinct ones).

The product of its digits is 4860, while the sum is 30.

The square root of 13691325 is about 3700.1790497218. The cubic root of 13691325 is about 239.2297353909.

The spelling of 13691325 in words is "thirteen million, six hundred ninety-one thousand, three hundred twenty-five".