127225209 has 8 divisors (see below), whose sum is σ = 175105792. Its totient is φ = 82080720.

The previous prime is 127225169. The next prime is 127225237. The reversal of 127225209 is 902522721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 127225209 - 2⁹ = 127224697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127225409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683914 + ... + 684099.

It is an arithmetic number, because the mean of its divisors is an integer number (21888224).

Almost surely, 2^127225209 is an apocalyptic number.

It is an amenable number.

127225209 is a deficient number, since it is larger than the sum of its proper divisors (47880583).

127225209 is a wasteful number, since it uses less digits than its factorization.

127225209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368047.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 127225209 is about 11279.4152773980. The cubic root of 127225209 is about 502.9495118798.

The spelling of 127225209 in words is "one hundred twenty-seven million, two hundred twenty-five thousand, two hundred nine".