225633261 has 8 divisors (see below), whose sum is σ = 343822144. Its totient is φ = 128933280.

The previous prime is 225633257. The next prime is 225633263. The reversal of 225633261 is 162336522.

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

It is not a de Polignac number, because 225633261 - 2² = 225633257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225633263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5372200 + ... + 5372241.

It is an arithmetic number, because the mean of its divisors is an integer number (42977768).

Almost surely, 2^225633261 is an apocalyptic number.

225633261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

225633261 is a deficient number, since it is larger than the sum of its proper divisors (118188883).

225633261 is a wasteful number, since it uses less digits than its factorization.

225633261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10744451.

The product of its digits is 12960, while the sum is 30.

The square root of 225633261 is about 15021.0938682907. The cubic root of 225633261 is about 608.7902756319.

Adding to 225633261 its reverse (162336522), we get a palindrome (387969783).

The spelling of 225633261 in words is "two hundred twenty-five million, six hundred thirty-three thousand, two hundred sixty-one".