25864911 has 6 divisors (see below), whose sum is σ = 37360440. Its totient is φ = 17243268.

The previous prime is 25864859. The next prime is 25864921. The reversal of 25864911 is 11946852.

25864911 is a `hidden beast` number, since 2 + 5 + 8 + 649 + 1 + 1 = 666.

It is not a de Polignac number, because 25864911 - 2⁶ = 25864847 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25864921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1436931 + ... + 1436948.

It is an arithmetic number, because the mean of its divisors is an integer number (6226740).

Almost surely, 2^25864911 is an apocalyptic number.

25864911 is a deficient number, since it is larger than the sum of its proper divisors (11495529).

25864911 is a wasteful number, since it uses less digits than its factorization.

25864911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873885 (or 2873882 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 25864911 is about 5085.7556960593. The cubic root of 25864911 is about 295.7356379297.

The spelling of 25864911 in words is "twenty-five million, eight hundred sixty-four thousand, nine hundred eleven".