71047225 has 12 divisors (see below), whose sum is σ = 88565760. Its totient is φ = 56536400.

The previous prime is 71047183. The next prime is 71047231. The reversal of 71047225 is 52274017.

It is not a de Polignac number, because 71047225 - 2⁹ = 71046713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71047193 and 71047202.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2665 + ... + 12214.

It is an arithmetic number, because the mean of its divisors is an integer number (7380480).

Almost surely, 2^71047225 is an apocalyptic number.

It is an amenable number.

71047225 is a deficient number, since it is larger than the sum of its proper divisors (17518535).

71047225 is a wasteful number, since it uses less digits than its factorization.

71047225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15080 (or 15075 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 71047225 is about 8428.9515955426. The cubic root of 71047225 is about 414.1735621621.

The spelling of 71047225 in words is "seventy-one million, forty-seven thousand, two hundred twenty-five".