78295925999 has 2 divisors, whose sum is σ = 78295926000. Its totient is φ = 78295925998.

The previous prime is 78295925927. The next prime is 78295926067. The reversal of 78295925999 is 99952959287.

It is a strong prime.

It is an emirp because it is prime and its reverse (99952959287) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78295925999 - 2¹⁶ = 78295860463 is a prime.

It is a super-3 number, since 3×78295925999³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78295825999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39147962999 + 39147963000.

It is an arithmetic number, because the mean of its divisors is an integer number (39147963000).

Almost surely, 2^78295925999 is an apocalyptic number.

78295925999 is a deficient number, since it is larger than the sum of its proper divisors (1).

78295925999 is an equidigital number, since it uses as much as digits as its factorization.

78295925999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 330674400, while the sum is 74.

The spelling of 78295925999 in words is "seventy-eight billion, two hundred ninety-five million, nine hundred twenty-five thousand, nine hundred ninety-nine".