71277007825 has 12 divisors (see below), whose sum is σ = 88457611788. Its totient is φ = 56973785600.

The previous prime is 71277007793. The next prime is 71277007859. The reversal of 71277007825 is 52870077217.

It can be written as a sum of positive squares in 6 ways, for example, as 8287553296 + 62989454529 = 91036^2 + 250977^2 .

It is not a de Polignac number, because 71277007825 - 2⁵ = 71277007793 is a prime.

It is a super-2 number, since 2×71277007825² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1165096 + ... + 1224745.

It is an arithmetic number, because the mean of its divisors is an integer number (7371467649).

Almost surely, 2^71277007825 is an apocalyptic number.

It is an amenable number.

71277007825 is a deficient number, since it is larger than the sum of its proper divisors (17180603963).

71277007825 is a wasteful number, since it uses less digits than its factorization.

71277007825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391044 (or 2391039 counting only the distinct ones).

The product of its (nonzero) digits is 384160, while the sum is 46.

The spelling of 71277007825 in words is "seventy-one billion, two hundred seventy-seven million, seven thousand, eight hundred twenty-five".