13503425 has 12 divisors (see below), whose sum is σ = 18032700. Its totient is φ = 9971520.

The previous prime is 13503421. The next prime is 13503437. The reversal of 13503425 is 52430531.

It can be written as a sum of positive squares in 6 ways, for example, as 4765489 + 8737936 = 2183^2 + 2956^2 .

It is not a de Polignac number, because 13503425 - 2² = 13503421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13503425.

It is not an unprimeable number, because it can be changed into a prime (13503421) 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, 20450 + ... + 21099.

It is an arithmetic number, because the mean of its divisors is an integer number (1502725).

Almost surely, 2^13503425 is an apocalyptic number.

It is an amenable number.

13503425 is a deficient number, since it is larger than the sum of its proper divisors (4529275).

13503425 is a wasteful number, since it uses less digits than its factorization.

13503425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41572 (or 41567 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 13503425 is about 3674.7006680817. The cubic root of 13503425 is about 238.1302925689.

Adding to 13503425 its reverse (52430531), we get a palindrome (65933956).

The spelling of 13503425 in words is "thirteen million, five hundred three thousand, four hundred twenty-five".