25056717586979 has 16 divisors (see below), whose sum is σ = 28408023252000. Its totient is φ = 21909133933056.

The previous prime is 25056717586961. The next prime is 25056717586993. The reversal of 25056717586979 is 97968571765052.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25056717586979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25056717586909) 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 15 ways as a sum of consecutive naturals, for example, 4583804 + ... + 8433545.

It is an arithmetic number, because the mean of its divisors is an integer number (1775501453250).

Almost surely, 2^{25056717586979} is an apocalyptic number.

25056717586979 is a deficient number, since it is larger than the sum of its proper divisors (3351305665021).

25056717586979 is a wasteful number, since it uses less digits than its factorization.

25056717586979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13025174.

The product of its (nonzero) digits is 2000376000, while the sum is 77.

The spelling of 25056717586979 in words is "twenty-five trillion, fifty-six billion, seven hundred seventeen million, five hundred eighty-six thousand, nine hundred seventy-nine".