25779546079 has 8 divisors (see below), whose sum is σ = 31195417248. Its totient is φ = 20796944640.

The previous prime is 25779546017. The next prime is 25779546109. The reversal of 25779546079 is 97064597752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25779546079 - 2¹⁹ = 25779021791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25779540079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108317302 + ... + 108317539.

It is an arithmetic number, because the mean of its divisors is an integer number (3899427156).

Almost surely, 2^25779546079 is an apocalyptic number.

25779546079 is a deficient number, since it is larger than the sum of its proper divisors (5415871169).

25779546079 is a wasteful number, since it uses less digits than its factorization.

25779546079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216634865.

The product of its (nonzero) digits is 33339600, while the sum is 61.

The spelling of 25779546079 in words is "twenty-five billion, seven hundred seventy-nine million, five hundred forty-six thousand, seventy-nine".