79859334324025 has 9 divisors (see below), whose sum is σ = 99025629967533. Its totient is φ = 63887431713600.

The previous prime is 79859334324023. The next prime is 79859334324041. The reversal of 79859334324025 is 52042343395897.

It is a happy number.

The square root of 79859334324025 is 8936405.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 44575211602089 + 35284122721936 = 6676467^2 + 5940044^2 .

It is not a de Polignac number, because 79859334324025 - 2¹ = 79859334324023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79859334324023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 43788385 + ... + 45575665.

Almost surely, 2^{79859334324025} is an apocalyptic number.

79859334324025 is the 8936405-th square number.

79859334324025 is the 4468203-rd centered octagonal number.

It is an amenable number.

79859334324025 is a deficient number, since it is larger than the sum of its proper divisors (19166295643508).

79859334324025 is an frugal number, since it uses more digits than its factorization.

79859334324025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574572 (or 1787286 counting only the distinct ones).

The product of its (nonzero) digits is 195955200, while the sum is 64.

The spelling of 79859334324025 in words is "seventy-nine trillion, eight hundred fifty-nine billion, three hundred thirty-four million, three hundred twenty-four thousand, twenty-five".