225261533 has 4 divisors (see below), whose sum is σ = 257441760. Its totient is φ = 193081308.

The previous prime is 225261521. The next prime is 225261541. The reversal of 225261533 is 335162522.

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.

It is not a de Polignac number, because 225261533 - 2⁸ = 225261277 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 = 225261496 and 225261505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225261733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16090103 + ... + 16090116.

It is an arithmetic number, because the mean of its divisors is an integer number (64360440).

Almost surely, 2^225261533 is an apocalyptic number.

It is an amenable number.

225261533 is a deficient number, since it is larger than the sum of its proper divisors (32180227).

225261533 is an equidigital number, since it uses as much as digits as its factorization.

225261533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32180226.

The product of its digits is 10800, while the sum is 29.

The square root of 225261533 is about 15008.7152348227. The cubic root of 225261533 is about 608.4557670546.

The spelling of 225261533 in words is "two hundred twenty-five million, two hundred sixty-one thousand, five hundred thirty-three".