225168261 has 8 divisors (see below), whose sum is σ = 300828000. Its totient is φ = 149810352.

The previous prime is 225168257. The next prime is 225168299. The reversal of 225168261 is 162861522.

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

It is not a de Polignac number, because 225168261 - 2² = 225168257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225168241) 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, 73710 + ... + 76703.

It is an arithmetic number, because the mean of its divisors is an integer number (37603500).

Almost surely, 2^225168261 is an apocalyptic number.

It is an amenable number.

225168261 is a deficient number, since it is larger than the sum of its proper divisors (75659739).

225168261 is a wasteful number, since it uses less digits than its factorization.

225168261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150915.

The product of its digits is 11520, while the sum is 33.

The square root of 225168261 is about 15005.6076518080. The cubic root of 225168261 is about 608.3717762074.

The spelling of 225168261 in words is "two hundred twenty-five million, one hundred sixty-eight thousand, two hundred sixty-one".