25779480927 has 4 divisors (see below), whose sum is σ = 34372641240. Its totient is φ = 17186320616.

The previous prime is 25779480919. The next prime is 25779480941. The reversal of 25779480927 is 72908497752.

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 25779480927 - 2³ = 25779480919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25779487927) 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, 4296580152 + ... + 4296580157.

It is an arithmetic number, because the mean of its divisors is an integer number (8593160310).

Almost surely, 2^25779480927 is an apocalyptic number.

25779480927 is a deficient number, since it is larger than the sum of its proper divisors (8593160313).

25779480927 is an equidigital number, since it uses as much as digits as its factorization.

25779480927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8593160312.

The product of its (nonzero) digits is 17781120, while the sum is 60.

The spelling of 25779480927 in words is "twenty-five billion, seven hundred seventy-nine million, four hundred eighty thousand, nine hundred twenty-seven".