225117047 has 2 divisors, whose sum is σ = 225117048. Its totient is φ = 225117046.

The previous prime is 225117041. The next prime is 225117049. The reversal of 225117047 is 740711522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225117047 - 2⁸ = 225116791 is a prime.

Together with 225117049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225117041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112558523 + 112558524.

It is an arithmetic number, because the mean of its divisors is an integer number (112558524).

Almost surely, 2^225117047 is an apocalyptic number.

225117047 is a deficient number, since it is larger than the sum of its proper divisors (1).

225117047 is an equidigital number, since it uses as much as digits as its factorization.

225117047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 225117047 is about 15003.9010593912. The cubic root of 225117047 is about 608.3256484590.

Adding to 225117047 its reverse (740711522), we get a palindrome (965828569).

The spelling of 225117047 in words is "two hundred twenty-five million, one hundred seventeen thousand, forty-seven".