71165125 has 8 divisors (see below), whose sum is σ = 88814232. Its totient is φ = 56932000.

The previous prime is 71165123. The next prime is 71165137. The reversal of 71165125 is 52156117.

It can be written as a sum of positive squares in 4 ways, for example, as 15319396 + 55845729 = 3914^2 + 7473^2 .

It is not a de Polignac number, because 71165125 - 2¹ = 71165123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71165093 and 71165102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71165123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284536 + ... + 284785.

It is an arithmetic number, because the mean of its divisors is an integer number (11101779).

Almost surely, 2^71165125 is an apocalyptic number.

It is an amenable number.

71165125 is a deficient number, since it is larger than the sum of its proper divisors (17649107).

71165125 is an equidigital number, since it uses as much as digits as its factorization.

71165125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569336 (or 569326 counting only the distinct ones).

The product of its digits is 2100, while the sum is 28.

The square root of 71165125 is about 8435.9424488317. The cubic root of 71165125 is about 414.4025369826.

The spelling of 71165125 in words is "seventy-one million, one hundred sixty-five thousand, one hundred twenty-five".