78141175825 has 6 divisors (see below), whose sum is σ = 96895058054. Its totient is φ = 62512940640.

The previous prime is 78141175757. The next prime is 78141175829. The reversal of 78141175825 is 52857114187.

It can be written as a sum of positive squares in 3 ways, for example, as 10844514769 + 67296661056 = 104137^2 + 259416^2 .

It is not a de Polignac number, because 78141175825 - 2⁹ = 78141175313 is a prime.

It is a super-2 number, since 2×78141175825² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78141175829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1562823492 + ... + 1562823541.

Almost surely, 2^78141175825 is an apocalyptic number.

It is an amenable number.

78141175825 is a deficient number, since it is larger than the sum of its proper divisors (18753882229).

78141175825 is a wasteful number, since it uses less digits than its factorization.

78141175825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125647043 (or 3125647038 counting only the distinct ones).

The product of its digits is 627200, while the sum is 49.

The spelling of 78141175825 in words is "seventy-eight billion, one hundred forty-one million, one hundred seventy-five thousand, eight hundred twenty-five".