71446225 has 6 divisors (see below), whose sum is σ = 88593350. Its totient is φ = 57156960.

The previous prime is 71446183. The next prime is 71446229. The reversal of 71446225 is 52264417.

It can be written as a sum of positive squares in 3 ways, for example, as 15241216 + 56205009 = 3904^2 + 7497^2 .

It is not a de Polignac number, because 71446225 - 2⁷ = 71446097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71446229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1428900 + ... + 1428949.

Almost surely, 2^71446225 is an apocalyptic number.

It is an amenable number.

71446225 is a deficient number, since it is larger than the sum of its proper divisors (17147125).

71446225 is a wasteful number, since it uses less digits than its factorization.

71446225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857859 (or 2857854 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 71446225 is about 8452.5868821326. The cubic root of 71446225 is about 414.9474458054.

The spelling of 71446225 in words is "seventy-one million, four hundred forty-six thousand, two hundred twenty-five".