25995813 has 16 divisors (see below), whose sum is σ = 35458560. Its totient is φ = 16935536.

The previous prime is 25995797. The next prime is 25995817. The reversal of 25995813 is 31859952.

It is a cyclic number.

It is not a de Polignac number, because 25995813 - 2⁴ = 25995797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25995817) 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 15 ways as a sum of consecutive naturals, for example, 39856 + ... + 40502.

It is an arithmetic number, because the mean of its divisors is an integer number (2216160).

Almost surely, 2^25995813 is an apocalyptic number.

It is an amenable number.

25995813 is a deficient number, since it is larger than the sum of its proper divisors (9462747).

25995813 is a wasteful number, since it uses less digits than its factorization.

25995813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its digits is 97200, while the sum is 42.

The square root of 25995813 is about 5098.6089279332. The cubic root of 25995813 is about 296.2337034600.

The spelling of 25995813 in words is "twenty-five million, nine hundred ninety-five thousand, eight hundred thirteen".