13625231 has 4 divisors (see below), whose sum is σ = 13811952. Its totient is φ = 13438512.

The previous prime is 13625219. The next prime is 13625233. The reversal of 13625231 is 13252631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13625231 is a prime.

It is a super-2 number, since 2×13625231² = 371293839606722, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 13625197 and 13625206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13625233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93251 + ... + 93396.

It is an arithmetic number, because the mean of its divisors is an integer number (3452988).

Almost surely, 2^13625231 is an apocalyptic number.

13625231 is a deficient number, since it is larger than the sum of its proper divisors (186721).

13625231 is an equidigital number, since it uses as much as digits as its factorization.

13625231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186720.

The product of its digits is 1080, while the sum is 23.

The square root of 13625231 is about 3691.2370555140. The cubic root of 13625231 is about 238.8441588347.

Adding to 13625231 its reverse (13252631), we get a palindrome (26877862).

The spelling of 13625231 in words is "thirteen million, six hundred twenty-five thousand, two hundred thirty-one".