71094223225 has 9 divisors (see below), whose sum is σ = 88158489967. Its totient is φ = 56874312040.

The previous prime is 71094223201. The next prime is 71094223229. The reversal of 71094223225 is 52232249017.

The square root of 71094223225 is 266635.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 25593920361 + 45500302864 = 159981^2 + 213308^2 .

It is a de Polignac number, because none of the positive numbers 2^k-71094223225 is a prime.

It is a super-2 number, since 2×71094223225² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71094223229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1306512 + ... + 1359838.

Almost surely, 2^71094223225 is an apocalyptic number.

71094223225 is the 266635-th square number.

71094223225 is the 133318-th centered octagonal number.

It is an amenable number.

71094223225 is a deficient number, since it is larger than the sum of its proper divisors (17064266742).

71094223225 is an frugal number, since it uses more digits than its factorization.

71094223225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106664 (or 53332 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 71094223225 in words is "seventy-one billion, ninety-four million, two hundred twenty-three thousand, two hundred twenty-five".