11925054891 has 6 divisors (see below), whose sum is σ = 17225079300. Its totient is φ = 7950036588.

The previous prime is 11925054887. The next prime is 11925054907. The reversal of 11925054891 is 19845052911.

11925054891 is a `hidden beast` number, since 1 + 19 + 2 + 5 + 0 + 548 + 91 = 666.

It is not a de Polignac number, because 11925054891 - 2² = 11925054887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11925054091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 662503041 + ... + 662503058.

It is an arithmetic number, because the mean of its divisors is an integer number (2870846550).

Almost surely, 2^11925054891 is an apocalyptic number.

11925054891 is a deficient number, since it is larger than the sum of its proper divisors (5300024409).

11925054891 is a wasteful number, since it uses less digits than its factorization.

11925054891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325006105 (or 1325006102 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The spelling of 11925054891 in words is "eleven billion, nine hundred twenty-five million, fifty-four thousand, eight hundred ninety-one".