78707725 has 12 divisors (see below), whose sum is σ = 101841696. Its totient is φ = 60228080.

The previous prime is 78707723. The next prime is 78707731. The reversal of 78707725 is 52770787.

It is not a de Polignac number, because 78707725 - 2¹ = 78707723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78707723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67867 + ... + 69016.

It is an arithmetic number, because the mean of its divisors is an integer number (8486808).

Almost surely, 2^78707725 is an apocalyptic number.

It is an amenable number.

78707725 is a deficient number, since it is larger than the sum of its proper divisors (23133971).

78707725 is a wasteful number, since it uses less digits than its factorization.

78707725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136916 (or 136911 counting only the distinct ones).

The product of its (nonzero) digits is 192080, while the sum is 43.

The square root of 78707725 is about 8871.7374284860. The cubic root of 78707725 is about 428.5542303945.

The spelling of 78707725 in words is "seventy-eight million, seven hundred seven thousand, seven hundred twenty-five".