78425458422 has 16 divisors (see below), whose sum is σ = 159509407680. Its totient is φ = 25698737672.

The previous prime is 78425458421. The next prime is 78425458451. The reversal of 78425458422 is 22485452487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78425458421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110770068 + ... + 110770775.

It is an arithmetic number, because the mean of its divisors is an integer number (9969337980).

Almost surely, 2^78425458422 is an apocalyptic number.

78425458422 is an abundant number, since it is smaller than the sum of its proper divisors (81083949258).

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

78425458422 is a wasteful number, since it uses less digits than its factorization.

78425458422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221540907.

The product of its digits is 5734400, while the sum is 51.

The spelling of 78425458422 in words is "seventy-eight billion, four hundred twenty-five million, four hundred fifty-eight thousand, four hundred twenty-two".