71225656 has 8 divisors (see below), whose sum is σ = 133548120. Its totient is φ = 35612824.

The previous prime is 71225639. The next prime is 71225659. The reversal of 71225656 is 65652217.

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 (71225659) 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, 4451596 + ... + 4451611.

It is an arithmetic number, because the mean of its divisors is an integer number (16693515).

Almost surely, 2^71225656 is an apocalyptic number.

It is an amenable number.

71225656 is a deficient number, since it is larger than the sum of its proper divisors (62322464).

71225656 is a wasteful number, since it uses less digits than its factorization.

71225656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8903213 (or 8903209 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 71225656 is about 8439.5293707647. The cubic root of 71225656 is about 414.5199966295.

The spelling of 71225656 in words is "seventy-one million, two hundred twenty-five thousand, six hundred fifty-six".