78502103422225 has 48 divisors (see below), whose sum is σ = 115566385420800. Its totient is φ = 51756341978880.

The previous prime is 78502103422217. The next prime is 78502103422229. The reversal of 78502103422225 is 52222430120587.

It is not a de Polignac number, because 78502103422225 - 2³ = 78502103422217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78502103422229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31147734 + ... + 33573583.

It is an arithmetic number, because the mean of its divisors is an integer number (2407633029600).

Almost surely, 2^{78502103422225} is an apocalyptic number.

It is an amenable number.

78502103422225 is a deficient number, since it is larger than the sum of its proper divisors (37064281998575).

78502103422225 is a wasteful number, since it uses less digits than its factorization.

78502103422225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64721602 (or 64721597 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 43.

The spelling of 78502103422225 in words is "seventy-eight trillion, five hundred two billion, one hundred three million, four hundred twenty-two thousand, two hundred twenty-five".