25570979683 has 4 divisors (see below), whose sum is σ = 26262087280. Its totient is φ = 24879872088.

The previous prime is 25570979677. The next prime is 25570979723. The reversal of 25570979683 is 38697907552.

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 25570979683 - 2²¹ = 25568882531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25570979633) 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 3 ways as a sum of consecutive naturals, for example, 345553743 + ... + 345553816.

It is an arithmetic number, because the mean of its divisors is an integer number (6565521820).

Almost surely, 2^25570979683 is an apocalyptic number.

25570979683 is a deficient number, since it is larger than the sum of its proper divisors (691107597).

25570979683 is an equidigital number, since it uses as much as digits as its factorization.

25570979683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691107596.

The product of its (nonzero) digits is 28576800, while the sum is 61.

The spelling of 25570979683 in words is "twenty-five billion, five hundred seventy million, nine hundred seventy-nine thousand, six hundred eighty-three".