71165425 has 6 divisors (see below), whose sum is σ = 88245158. Its totient is φ = 56932320.

The previous prime is 71165407. The next prime is 71165441. The reversal of 71165425 is 52456117.

It can be written as a sum of positive squares in 3 ways, for example, as 5895184 + 65270241 = 2428^2 + 8079^2 .

It is not a de Polignac number, because 71165425 - 2⁹ = 71164913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1423284 + ... + 1423333.

Almost surely, 2^71165425 is an apocalyptic number.

It is an amenable number.

71165425 is a deficient number, since it is larger than the sum of its proper divisors (17079733).

71165425 is a wasteful number, since it uses less digits than its factorization.

71165425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846627 (or 2846622 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 71165425 is about 8435.9602298731. The cubic root of 71165425 is about 414.4031192931.

The spelling of 71165425 in words is "seventy-one million, one hundred sixty-five thousand, four hundred twenty-five".