25793782705 has 8 divisors (see below), whose sum is σ = 30976411752. Its totient is φ = 20619111168.

The previous prime is 25793782681. The next prime is 25793782711. The reversal of 25793782705 is 50728739752.

It can be written as a sum of positive squares in 4 ways, for example, as 7652925361 + 18140857344 = 87481^2 + 134688^2 .

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 25793782705 - 2²³ = 25785394097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1982242 + ... + 1995211.

It is an arithmetic number, because the mean of its divisors is an integer number (3872051469).

Almost surely, 2^25793782705 is an apocalyptic number.

It is an amenable number.

25793782705 is a deficient number, since it is larger than the sum of its proper divisors (5182629047).

25793782705 is a wasteful number, since it uses less digits than its factorization.

25793782705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978755.

The product of its (nonzero) digits is 7408800, while the sum is 55.

The spelling of 25793782705 in words is "twenty-five billion, seven hundred ninety-three million, seven hundred eighty-two thousand, seven hundred five".