13424425 has 24 divisors (see below), whose sum is σ = 19498752. Its totient is φ = 8976000.

The previous prime is 13424413. The next prime is 13424429. The reversal of 13424425 is 52442431.

It is a happy number.

It is not a de Polignac number, because 13424425 - 2⁷ = 13424297 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13424425.

It is not an unprimeable number, because it can be changed into a prime (13424429) 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 23 ways as a sum of consecutive naturals, for example, 6240 + ... + 8110.

It is an arithmetic number, because the mean of its divisors is an integer number (812448).

Almost surely, 2^13424425 is an apocalyptic number.

It is an amenable number.

13424425 is a deficient number, since it is larger than the sum of its proper divisors (6074327).

13424425 is a wasteful number, since it uses less digits than its factorization.

13424425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929 (or 1924 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 13424425 is about 3663.9357254188. The cubic root of 13424425 is about 237.6650007609.

Adding to 13424425 its reverse (52442431), we get a palindrome (65866856).

The spelling of 13424425 in words is "thirteen million, four hundred twenty-four thousand, four hundred twenty-five".