25874214779 has 4 divisors (see below), whose sum is σ = 29570531184. Its totient is φ = 22177898376.

The previous prime is 25874214749. The next prime is 25874214791. The reversal of 25874214779 is 97741247852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25874214779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25874214749) 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, 1848158192 + ... + 1848158205.

It is an arithmetic number, because the mean of its divisors is an integer number (7392632796).

Almost surely, 2^25874214779 is an apocalyptic number.

25874214779 is a deficient number, since it is larger than the sum of its proper divisors (3696316405).

25874214779 is an equidigital number, since it uses as much as digits as its factorization.

25874214779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696316404.

The product of its digits is 7902720, while the sum is 56.

The spelling of 25874214779 in words is "twenty-five billion, eight hundred seventy-four million, two hundred fourteen thousand, seven hundred seventy-nine".