25444942679 has 12 divisors (see below), whose sum is σ = 28193578776. Its totient is φ = 22941408672.

The previous prime is 25444942667. The next prime is 25444942681. The reversal of 25444942679 is 97624944452.

It is a de Polignac number, because none of the positive numbers 2^k-25444942679 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 (25444941679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1743452 + ... + 1757985.

It is an arithmetic number, because the mean of its divisors is an integer number (2349464898).

Almost surely, 2^25444942679 is an apocalyptic number.

25444942679 is a deficient number, since it is larger than the sum of its proper divisors (2748636097).

25444942679 is a wasteful number, since it uses less digits than its factorization.

25444942679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501506 (or 3501493 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 56.

The spelling of 25444942679 in words is "twenty-five billion, four hundred forty-four million, nine hundred forty-two thousand, six hundred seventy-nine".