78006406325 has 6 divisors (see below), whose sum is σ = 96727943874. Its totient is φ = 62405125040.

The previous prime is 78006406301. The next prime is 78006406351. The reversal of 78006406325 is 52360460087.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 21608706001 + 56397700324 = 146999^2 + 237482^2 .

It is a de Polignac number, because none of the positive numbers 2^k-78006406325 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1560128102 + ... + 1560128151.

It is an arithmetic number, because the mean of its divisors is an integer number (16121323979).

Almost surely, 2^78006406325 is an apocalyptic number.

It is an amenable number.

78006406325 is a deficient number, since it is larger than the sum of its proper divisors (18721537549).

78006406325 is a wasteful number, since it uses less digits than its factorization.

78006406325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120256263 (or 3120256258 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 78006406325 in words is "seventy-eight billion, six million, four hundred six thousand, three hundred twenty-five".