225118647 has 36 divisors (see below), whose sum is σ = 356279040. Its totient is φ = 136895616.

The previous prime is 225118633. The next prime is 225118703. The reversal of 225118647 is 746811522.

225118647 is a `hidden beast` number, since 2 + 2 + 5 + 1 + 1 + 8 + 647 = 666.

It is not a de Polignac number, because 225118647 - 2⁷ = 225118519 is a prime.

It is a super-2 number, since 2×225118647² = 101356810454221218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225118247) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 134538 + ... + 136200.

It is an arithmetic number, because the mean of its divisors is an integer number (9896640).

Almost surely, 2^225118647 is an apocalyptic number.

225118647 is a deficient number, since it is larger than the sum of its proper divisors (131160393).

225118647 is a wasteful number, since it uses less digits than its factorization.

225118647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1768 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 225118647 is about 15003.9543787630. The cubic root of 225118647 is about 608.3270896630.

The spelling of 225118647 in words is "two hundred twenty-five million, one hundred eighteen thousand, six hundred forty-seven".