25912457911 has 4 divisors (see below), whose sum is σ = 25914537000. Its totient is φ = 25910378824.

The previous prime is 25912457903. The next prime is 25912457917. The reversal of 25912457911 is 11975421952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25912457911 - 2³ = 25912457903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25912457917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020736 + ... + 1045813.

It is an arithmetic number, because the mean of its divisors is an integer number (6478634250).

Almost surely, 2^25912457911 is an apocalyptic number.

25912457911 is a deficient number, since it is larger than the sum of its proper divisors (2079089).

25912457911 is a wasteful number, since it uses less digits than its factorization.

25912457911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079088.

The product of its digits is 226800, while the sum is 46.

The spelling of 25912457911 in words is "twenty-five billion, nine hundred twelve million, four hundred fifty-seven thousand, nine hundred eleven".