25785348079 has 4 divisors (see below), whose sum is σ = 25819411384. Its totient is φ = 25751284776.

The previous prime is 25785348049. The next prime is 25785348097. The reversal of 25785348079 is 97084358752.

It is a happy number.

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 25785348079 - 2¹³ = 25785339887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25785348019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17030517 + ... + 17032030.

It is an arithmetic number, because the mean of its divisors is an integer number (6454852846).

Almost surely, 2^25785348079 is an apocalyptic number.

25785348079 is a deficient number, since it is larger than the sum of its proper divisors (34063305).

25785348079 is an equidigital number, since it uses as much as digits as its factorization.

25785348079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34063304.

The product of its (nonzero) digits is 16934400, while the sum is 58.

The spelling of 25785348079 in words is "twenty-five billion, seven hundred eighty-five million, three hundred forty-eight thousand, seventy-nine".