78371271325 has 12 divisors (see below), whose sum is σ = 97233740928. Its totient is φ = 62662588400.

The previous prime is 78371271323. The next prime is 78371271361. The reversal of 78371271325 is 52317217387.

It is not a de Polignac number, because 78371271325 - 2¹ = 78371271323 is a prime.

It is a super-2 number, since 2×78371271325² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78371271323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 814231 + ... + 905380.

It is an arithmetic number, because the mean of its divisors is an integer number (8102811744).

Almost surely, 2^78371271325 is an apocalyptic number.

It is an amenable number.

78371271325 is a deficient number, since it is larger than the sum of its proper divisors (18862469603).

78371271325 is a wasteful number, since it uses less digits than its factorization.

78371271325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721444 (or 1721439 counting only the distinct ones).

The product of its digits is 493920, while the sum is 46.

The spelling of 78371271325 in words is "seventy-eight billion, three hundred seventy-one million, two hundred seventy-one thousand, three hundred twenty-five".