79745825 has 6 divisors (see below), whose sum is σ = 98884854. Its totient is φ = 63796640.

The previous prime is 79745791. The next prime is 79745837. The reversal of 79745825 is 52854797.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18421264 + 61324561 = 4292^2 + 7831^2 .

It is not a de Polignac number, because 79745825 - 2¹⁸ = 79483681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79745825.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1594892 + ... + 1594941.

It is an arithmetic number, because the mean of its divisors is an integer number (16480809).

Almost surely, 2^79745825 is an apocalyptic number.

It is an amenable number.

79745825 is a deficient number, since it is larger than the sum of its proper divisors (19139029).

79745825 is a wasteful number, since it uses less digits than its factorization.

79745825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189843 (or 3189838 counting only the distinct ones).

The product of its digits is 705600, while the sum is 47.

The square root of 79745825 is about 8930.0517915631. The cubic root of 79745825 is about 430.4301176652.

The spelling of 79745825 in words is "seventy-nine million, seven hundred forty-five thousand, eight hundred twenty-five".