71125605 has 48 divisors (see below), whose sum is σ = 126584640. Its totient is φ = 36935424.

The previous prime is 71125601. The next prime is 71125651. The reversal of 71125605 is 50652117.

It is not a de Polignac number, because 71125605 - 2² = 71125601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71125601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 511626 + ... + 511764.

It is an arithmetic number, because the mean of its divisors is an integer number (2637180).

Almost surely, 2^71125605 is an apocalyptic number.

It is an amenable number.

71125605 is a deficient number, since it is larger than the sum of its proper divisors (55459035).

71125605 is a wasteful number, since it uses less digits than its factorization.

71125605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 71125605 is about 8433.5997652248. The cubic root of 71125605 is about 414.3258129751.

The spelling of 71125605 in words is "seventy-one million, one hundred twenty-five thousand, six hundred five".