225733831 has 4 divisors (see below), whose sum is σ = 225779200. Its totient is φ = 225688464.

The previous prime is 225733819. The next prime is 225733843. The reversal of 225733831 is 138337522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138337522 = 2 ⋅69168761.

It is an interprime number because it is at equal distance from previous prime (225733819) and next prime (225733843).

It is a cyclic number.

It is not a de Polignac number, because 225733831 - 2¹³ = 225725639 is a prime.

It is a super-2 number, since 2×225733831² = 101911524915873122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225733811) 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, 14151 + ... + 25528.

It is an arithmetic number, because the mean of its divisors is an integer number (56444800).

Almost surely, 2^225733831 is an apocalyptic number.

225733831 is a deficient number, since it is larger than the sum of its proper divisors (45369).

225733831 is an equidigital number, since it uses as much as digits as its factorization.

225733831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45368.

The product of its digits is 30240, while the sum is 34.

The square root of 225733831 is about 15024.4411210534. The cubic root of 225733831 is about 608.8807128653.

The spelling of 225733831 in words is "two hundred twenty-five million, seven hundred thirty-three thousand, eight hundred thirty-one".