225241261 has 4 divisors (see below), whose sum is σ = 257418592. Its totient is φ = 193063932.

The previous prime is 225241259. The next prime is 225241271. The reversal of 225241261 is 162142522.

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 a cyclic number.

It is not a de Polignac number, because 225241261 - 2¹ = 225241259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225241201) 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, 16088655 + ... + 16088668.

It is an arithmetic number, because the mean of its divisors is an integer number (64354648).

Almost surely, 2^225241261 is an apocalyptic number.

It is an amenable number.

225241261 is a deficient number, since it is larger than the sum of its proper divisors (32177331).

225241261 is an equidigital number, since it uses as much as digits as its factorization.

225241261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32177330.

The product of its digits is 1920, while the sum is 25.

The square root of 225241261 is about 15008.0398786784. The cubic root of 225241261 is about 608.4375142188.

Adding to 225241261 its reverse (162142522), we get a palindrome (387383783).

The spelling of 225241261 in words is "two hundred twenty-five million, two hundred forty-one thousand, two hundred sixty-one".