225012961 has 16 divisors (see below), whose sum is σ = 236234880. Its totient is φ = 214126720.

The previous prime is 225012959. The next prime is 225012967. The reversal of 225012961 is 169210522.

It is a cyclic number.

It is not a de Polignac number, because 225012961 - 2¹ = 225012959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225012967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403695 + ... + 404251.

It is an arithmetic number, because the mean of its divisors is an integer number (14764680).

Almost surely, 2^225012961 is an apocalyptic number.

It is an amenable number.

225012961 is a deficient number, since it is larger than the sum of its proper divisors (11221919).

225012961 is a wasteful number, since it uses less digits than its factorization.

225012961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 225012961 is about 15000.4320271118. The cubic root of 225012961 is about 608.2318780620.

The spelling of 225012961 in words is "two hundred twenty-five million, twelve thousand, nine hundred sixty-one".