79718825 has 24 divisors (see below), whose sum is σ = 105588480. Its totient is φ = 59572800.

The previous prime is 79718819. The next prime is 79718827. The reversal of 79718825 is 52881797.

It is not a de Polignac number, because 79718825 - 2¹² = 79714729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79718825.

It is not an unprimeable number, because it can be changed into a prime (79718827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20702 + ... + 24248.

It is an arithmetic number, because the mean of its divisors is an integer number (4399520).

Almost surely, 2^79718825 is an apocalyptic number.

It is an amenable number.

79718825 is a deficient number, since it is larger than the sum of its proper divisors (25869655).

79718825 is a wasteful number, since it uses less digits than its factorization.

79718825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617 (or 3612 counting only the distinct ones).

The product of its digits is 282240, while the sum is 47.

The square root of 79718825 is about 8928.5399142301. The cubic root of 79718825 is about 430.3815344529.

The spelling of 79718825 in words is "seventy-nine million, seven hundred eighteen thousand, eight hundred twenty-five".