13025815 has 16 divisors (see below), whose sum is σ = 17418240. Its totient is φ = 9269920.

The previous prime is 13025807. The next prime is 13025899. The reversal of 13025815 is 51852031.

It is a happy number.

It is not a de Polignac number, because 13025815 - 2³ = 13025807 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 13025815.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 66 + ... + 5104.

It is an arithmetic number, because the mean of its divisors is an integer number (1088640).

Almost surely, 2^13025815 is an apocalyptic number.

13025815 is a deficient number, since it is larger than the sum of its proper divisors (4392425).

13025815 is a wasteful number, since it uses less digits than its factorization.

13025815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5102.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 13025815 is about 3609.1293964057. The cubic root of 13025815 is about 235.2890061328.

Adding to 13025815 its reverse (51852031), we get a palindrome (64877846).

It can be divided in two parts, 1302 and 5815, that added together give a palindrome (7117).

The spelling of 13025815 in words is "thirteen million, twenty-five thousand, eight hundred fifteen".