225167731 has 4 divisors (see below), whose sum is σ = 227233600. Its totient is φ = 223101864.

The previous prime is 225167729. The next prime is 225167743. The reversal of 225167731 is 137761522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225167731 - 2¹ = 225167729 is a prime.

It is a super-2 number, since 2×225167731² = 101401014167376722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225167231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032771 + ... + 1032988.

It is an arithmetic number, because the mean of its divisors is an integer number (56808400).

Almost surely, 2^225167731 is an apocalyptic number.

225167731 is a deficient number, since it is larger than the sum of its proper divisors (2065869).

225167731 is a wasteful number, since it uses less digits than its factorization.

225167731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065868.

The product of its digits is 17640, while the sum is 34.

The square root of 225167731 is about 15005.5899917331. The cubic root of 225167731 is about 608.3712988795.

The spelling of 225167731 in words is "two hundred twenty-five million, one hundred sixty-seven thousand, seven hundred thirty-one".