225761647 has 4 divisors (see below), whose sum is σ = 225792576. Its totient is φ = 225730720.

The previous prime is 225761617. The next prime is 225761681. The reversal of 225761647 is 746167522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 225761647 - 2⁷ = 225761519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225761617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2247 + ... + 21367.

It is an arithmetic number, because the mean of its divisors is an integer number (56448144).

Almost surely, 2^225761647 is an apocalyptic number.

225761647 is a deficient number, since it is larger than the sum of its proper divisors (30929).

225761647 is a wasteful number, since it uses less digits than its factorization.

225761647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30928.

The product of its digits is 141120, while the sum is 40.

The square root of 225761647 is about 15025.3667842086. The cubic root of 225761647 is about 608.9057215672.

The spelling of 225761647 in words is "two hundred twenty-five million, seven hundred sixty-one thousand, six hundred forty-seven".