79873089425 has 18 divisors (see below), whose sum is σ = 104876318178. Its totient is φ = 60135351040.

The previous prime is 79873089377. The next prime is 79873089431. The reversal of 79873089425 is 52498037897.

It can be written as a sum of positive squares in 9 ways, for example, as 33500944 + 79839588481 = 5788^2 + 282559^2 .

It is not a de Polignac number, because 79873089425 - 2¹² = 79873085329 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 (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5819471 + ... + 5833179.

It is an arithmetic number, because the mean of its divisors is an integer number (5826462121).

Almost surely, 2^79873089425 is an apocalyptic number.

It is an amenable number.

79873089425 is a deficient number, since it is larger than the sum of its proper divisors (25003228753).

79873089425 is an frugal number, since it uses more digits than its factorization.

79873089425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27445 (or 13731 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 79873089425 in words is "seventy-nine billion, eight hundred seventy-three million, eighty-nine thousand, four hundred twenty-five".