225117147 has 8 divisors (see below), whose sum is σ = 300754944. Its totient is φ = 149778728.

The previous prime is 225117143. The next prime is 225117157. The reversal of 225117147 is 741711522.

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

It is a cyclic number.

It is not a de Polignac number, because 225117147 - 2² = 225117143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225117143) 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, 73083 + ... + 76100.

It is an arithmetic number, because the mean of its divisors is an integer number (37594368).

Almost surely, 2^225117147 is an apocalyptic number.

225117147 is a deficient number, since it is larger than the sum of its proper divisors (75637797).

225117147 is a wasteful number, since it uses less digits than its factorization.

225117147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149689.

The product of its digits is 3920, while the sum is 30.

The square root of 225117147 is about 15003.9043918575. The cubic root of 225117147 is about 608.3257385345.

Adding to 225117147 its reverse (741711522), we get a palindrome (966828669).

The spelling of 225117147 in words is "two hundred twenty-five million, one hundred seventeen thousand, one hundred forty-seven".