25779474927 has 36 divisors (see below), whose sum is σ = 38098752120. Its totient is φ = 16796982816.

The previous prime is 25779474913. The next prime is 25779474947. The reversal of 25779474927 is 72947497752.

25779474927 is a `hidden beast` number, since 2 + 5 + 7 + 79 + 474 + 92 + 7 = 666.

It is not a de Polignac number, because 25779474927 - 2⁶ = 25779474863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25779474907) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5605593 + ... + 5610189.

It is an arithmetic number, because the mean of its divisors is an integer number (1058298670).

Almost surely, 2^25779474927 is an apocalyptic number.

25779474927 is a deficient number, since it is larger than the sum of its proper divisors (12319277193).

25779474927 is a wasteful number, since it uses less digits than its factorization.

25779474927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4900 (or 4838 counting only the distinct ones).

The product of its digits is 62233920, while the sum is 63.

The spelling of 25779474927 in words is "twenty-five billion, seven hundred seventy-nine million, four hundred seventy-four thousand, nine hundred twenty-seven".