78625522572 has 48 divisors (see below), whose sum is σ = 184690527840. Its totient is φ = 26033236992.

The previous prime is 78625522571. The next prime is 78625522589. The reversal of 78625522572 is 27522552687.

It is not an unprimeable number, because it can be changed into a prime (78625522571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051698 + ... + 1123974.

It is an arithmetic number, because the mean of its divisors is an integer number (3847719330).

Almost surely, 2^78625522572 is an apocalyptic number.

It is an amenable number.

78625522572 is an abundant number, since it is smaller than the sum of its proper divisors (106065005268).

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

78625522572 is a wasteful number, since it uses less digits than its factorization.

78625522572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72890 (or 72888 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 51.

The spelling of 78625522572 in words is "seventy-eight billion, six hundred twenty-five million, five hundred twenty-two thousand, five hundred seventy-two".