25966409579 has 16 divisors (see below), whose sum is σ = 28677836160. Its totient is φ = 23314061760.

The previous prime is 25966409519. The next prime is 25966409597. The reversal of 25966409579 is 97590466952.

It is not a de Polignac number, because 25966409579 - 2²⁰ = 25965361003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25966409519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 873332 + ... + 902574.

It is an arithmetic number, because the mean of its divisors is an integer number (1792364760).

Almost surely, 2^25966409579 is an apocalyptic number.

25966409579 is a deficient number, since it is larger than the sum of its proper divisors (2711426581).

25966409579 is a wasteful number, since it uses less digits than its factorization.

25966409579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30250.

The product of its (nonzero) digits is 36741600, while the sum is 62.

The spelling of 25966409579 in words is "twenty-five billion, nine hundred sixty-six million, four hundred nine thousand, five hundred seventy-nine".