78025812 has 12 divisors (see below), whose sum is σ = 182060256. Its totient is φ = 26008600.

The previous prime is 78025811. The next prime is 78025819. The reversal of 78025812 is 21852087.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78025811) 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 3 ways as a sum of consecutive naturals, for example, 3251064 + ... + 3251087.

It is an arithmetic number, because the mean of its divisors is an integer number (15171688).

Almost surely, 2^78025812 is an apocalyptic number.

It is an amenable number.

78025812 is an abundant number, since it is smaller than the sum of its proper divisors (104034444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78025812 is a wasteful number, since it uses less digits than its factorization.

78025812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6502158 (or 6502156 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 78025812 is about 8833.2220621923. Note that the first 3 decimals coincide. The cubic root of 78025812 is about 427.3129936838.

Adding to 78025812 its reverse (21852087), we get a palindrome (99877899).

The spelling of 78025812 in words is "seventy-eight million, twenty-five thousand, eight hundred twelve".