13025817 has 18 divisors (see below), whose sum is σ = 21887658. Its totient is φ = 7443072.

The previous prime is 13025807. The next prime is 13025899. The reversal of 13025817 is 71852031.

It can be written as a sum of positive squares in only one way, i.e., 6780816 + 6245001 = 2604^2 + 2499^2 .

It is not a de Polignac number, because 13025817 - 2⁴ = 13025801 is a prime.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13025807) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14328 + ... + 15209.

It is an arithmetic number, because the mean of its divisors is an integer number (1215981).

Almost surely, 2^13025817 is an apocalyptic number.

It is an amenable number.

13025817 is a deficient number, since it is larger than the sum of its proper divisors (8861841).

13025817 is a wasteful number, since it uses less digits than its factorization.

13025817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29557 (or 29547 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 13025817 is about 3609.1296734809. The cubic root of 13025817 is about 235.2890181750.

Adding to 13025817 its reverse (71852031), we get a palindrome (84877848).

The spelling of 13025817 in words is "thirteen million, twenty-five thousand, eight hundred seventeen".