71225912 has 8 divisors (see below), whose sum is σ = 133548600. Its totient is φ = 35612952.

The previous prime is 71225911. The next prime is 71225929. The reversal of 71225912 is 21952217.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71225911) 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 as a sum of consecutive naturals, namely, 4451612 + ... + 4451627.

It is an arithmetic number, because the mean of its divisors is an integer number (16693575).

Almost surely, 2^71225912 is an apocalyptic number.

It is an amenable number.

71225912 is a deficient number, since it is larger than the sum of its proper divisors (62322688).

71225912 is a wasteful number, since it uses less digits than its factorization.

71225912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8903245 (or 8903241 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 71225912 is about 8439.5445374736. The cubic root of 71225912 is about 414.5204932530.

The spelling of 71225912 in words is "seventy-one million, two hundred twenty-five thousand, nine hundred twelve".