225243533 has 4 divisors (see below), whose sum is σ = 229061280. Its totient is φ = 221425788.

The previous prime is 225243527. The next prime is 225243539. The reversal of 225243533 is 335342522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335342522 = 2 ⋅167671261.

It is an interprime number because it is at equal distance from previous prime (225243527) and next prime (225243539).

It is a cyclic number.

It is not a de Polignac number, because 225243533 - 2²² = 221049229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 225243496 and 225243505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225243539) 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, 1908785 + ... + 1908902.

It is an arithmetic number, because the mean of its divisors is an integer number (57265320).

Almost surely, 2^225243533 is an apocalyptic number.

It is an amenable number.

225243533 is a deficient number, since it is larger than the sum of its proper divisors (3817747).

225243533 is an equidigital number, since it uses as much as digits as its factorization.

225243533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3817746.

The product of its digits is 21600, while the sum is 29.

The square root of 225243533 is about 15008.1155712501. The cubic root of 225243533 is about 608.4395599739.

The spelling of 225243533 in words is "two hundred twenty-five million, two hundred forty-three thousand, five hundred thirty-three".