78703212425 has 24 divisors (see below), whose sum is σ = 98970228000. Its totient is φ = 62076492800.

The previous prime is 78703212421. The next prime is 78703212437. The reversal of 78703212425 is 52421230787.

It is not a de Polignac number, because 78703212425 - 2² = 78703212421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78703212421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 980201 + ... + 1057449.

It is an arithmetic number, because the mean of its divisors is an integer number (4123759500).

Almost surely, 2^78703212425 is an apocalyptic number.

It is an amenable number.

78703212425 is a deficient number, since it is larger than the sum of its proper divisors (20267015575).

78703212425 is a wasteful number, since it uses less digits than its factorization.

78703212425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77833 (or 77828 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 78703212425 in words is "seventy-eight billion, seven hundred three million, two hundred twelve thousand, four hundred twenty-five".