25925837779 has 4 divisors (see below), whose sum is σ = 25933191984. Its totient is φ = 25918483576.

The previous prime is 25925837711. The next prime is 25925837887. The reversal of 25925837779 is 97773852952.

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 25925837779 - 2¹⁵ = 25925805011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25925837779.

It is not an unprimeable number, because it can be changed into a prime (25925835779) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3671812 + ... + 3678865.

It is an arithmetic number, because the mean of its divisors is an integer number (6483297996).

Almost surely, 2^25925837779 is an apocalyptic number.

25925837779 is a deficient number, since it is larger than the sum of its proper divisors (7354205).

25925837779 is an equidigital number, since it uses as much as digits as its factorization.

25925837779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7354204.

The product of its digits is 66679200, while the sum is 64.

The spelling of 25925837779 in words is "twenty-five billion, nine hundred twenty-five million, eight hundred thirty-seven thousand, seven hundred seventy-nine".