225272761 has 8 divisors (see below), whose sum is σ = 264413120. Its totient is φ = 187872048.

The previous prime is 225272731. The next prime is 225272767. The reversal of 225272761 is 167272522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225272761 - 2¹¹ = 225270713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225272767) 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 7 ways as a sum of consecutive naturals, for example, 434631 + ... + 435148.

It is an arithmetic number, because the mean of its divisors is an integer number (33051640).

Almost surely, 2^225272761 is an apocalyptic number.

It is an amenable number.

225272761 is a deficient number, since it is larger than the sum of its proper divisors (39140359).

225272761 is an equidigital number, since it uses as much as digits as its factorization.

225272761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869823.

The product of its digits is 23520, while the sum is 34.

The square root of 225272761 is about 15009.0892794999. The cubic root of 225272761 is about 608.4658762342.

The spelling of 225272761 in words is "two hundred twenty-five million, two hundred seventy-two thousand, seven hundred sixty-one".