79790984425 has 18 divisors (see below), whose sum is σ = 100589508474. Its totient is φ = 62786275200.

The previous prime is 79790984381. The next prime is 79790984431. The reversal of 79790984425 is 52448909797.

It can be written as a sum of positive squares in 9 ways, for example, as 78925036096 + 865948329 = 280936^2 + 29427^2 .

It is not a de Polignac number, because 79790984425 - 2¹³ = 79790976233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 335844 + ... + 521893.

Almost surely, 2^79790984425 is an apocalyptic number.

It is an amenable number.

79790984425 is a deficient number, since it is larger than the sum of its proper divisors (20798524049).

79790984425 is an equidigital number, since it uses as much as digits as its factorization.

79790984425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857869 (or 857803 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 64.

The spelling of 79790984425 in words is "seventy-nine billion, seven hundred ninety million, nine hundred eighty-four thousand, four hundred twenty-five".