13025865 has 16 divisors (see below), whose sum is σ = 20936448. Its totient is φ = 6915456.

The previous prime is 13025807. The next prime is 13025899. The reversal of 13025865 is 56852031.

It is not a de Polignac number, because 13025865 - 2⁶ = 13025801 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1632 + ... + 5358.

It is an arithmetic number, because the mean of its divisors is an integer number (1308528).

Almost surely, 2^13025865 is an apocalyptic number.

13025865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13025865 is a deficient number, since it is larger than the sum of its proper divisors (7910583).

13025865 is a wasteful number, since it uses less digits than its factorization.

13025865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 13025865 is about 3609.1363232774. The cubic root of 13025865 is about 235.2893071872.

Adding to 13025865 its product of nonzero digits (7200), we get a triangular number (13033065 = T₅₁₀₅).

Adding to 13025865 its reverse (56852031), we get a palindrome (69877896).

The spelling of 13025865 in words is "thirteen million, twenty-five thousand, eight hundred sixty-five".