78425806 has 16 divisors (see below), whose sum is σ = 124194960. Its totient is φ = 37142568.

The previous prime is 78425801. The next prime is 78425813. The reversal of 78425806 is 60852487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78425801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10860 + ... + 16576.

It is an arithmetic number, because the mean of its divisors is an integer number (7762185).

Almost surely, 2^78425806 is an apocalyptic number.

78425806 is a deficient number, since it is larger than the sum of its proper divisors (45769154).

78425806 is an equidigital number, since it uses as much as digits as its factorization.

78425806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776 (or 5738 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 78425806 is about 8855.8345738840. The cubic root of 78425806 is about 428.0419464231.

The spelling of 78425806 in words is "seventy-eight million, four hundred twenty-five thousand, eight hundred six".