13404425 has 12 divisors (see below), whose sum is σ = 16780176. Its totient is φ = 10621200.

The previous prime is 13404407. The next prime is 13404427. The reversal of 13404425 is 52440431.

It is not a de Polignac number, because 13404425 - 2⁸ = 13404169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13404425.

It is not an unprimeable number, because it can be changed into a prime (13404427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170 + ... + 5180.

It is an arithmetic number, because the mean of its divisors is an integer number (1398348).

Almost surely, 2^13404425 is an apocalyptic number.

It is an amenable number.

13404425 is a deficient number, since it is larger than the sum of its proper divisors (3375751).

13404425 is a wasteful number, since it uses less digits than its factorization.

13404425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128 (or 5123 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 13404425 is about 3661.2054025963. The cubic root of 13404425 is about 237.5469159393.

Adding to 13404425 its reverse (52440431), we get a palindrome (65844856).

It can be divided in two parts, 13 and 404425, that multiplied together give a palindrome (5257525).

The spelling of 13404425 in words is "thirteen million, four hundred four thousand, four hundred twenty-five".