13215425 has 12 divisors (see below), whose sum is σ = 16509360. Its totient is φ = 10493520.

The previous prime is 13215421. The next prime is 13215427. The reversal of 13215425 is 52451231.

It is not a de Polignac number, because 13215425 - 2² = 13215421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13215425.

It is not an unprimeable number, because it can be changed into a prime (13215421) 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, 1574 + ... + 5376.

It is an arithmetic number, because the mean of its divisors is an integer number (1375780).

Almost surely, 2^13215425 is an apocalyptic number.

It is an amenable number.

13215425 is a deficient number, since it is larger than the sum of its proper divisors (3293935).

13215425 is a wasteful number, since it uses less digits than its factorization.

13215425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3952 (or 3947 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 13215425 is about 3635.3026008848. The cubic root of 13215425 is about 236.4251707952.

Adding to 13215425 its reverse (52451231), we get a palindrome (65666656).

The spelling of 13215425 in words is "thirteen million, two hundred fifteen thousand, four hundred twenty-five".