225732961 has 2 divisors, whose sum is σ = 225732962. Its totient is φ = 225732960.

The previous prime is 225732937. The next prime is 225733031. The reversal of 225732961 is 169237522.

225732961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162435025 + 63297936 = 12745^2 + 7956^2 .

It is a cyclic number.

It is not a de Polignac number, because 225732961 - 2¹⁷ = 225601889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225732961.

It is not a weakly prime, because it can be changed into another prime (225732931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112866480 + 112866481.

It is an arithmetic number, because the mean of its divisors is an integer number (112866481).

Almost surely, 2^225732961 is an apocalyptic number.

It is an amenable number.

225732961 is a deficient number, since it is larger than the sum of its proper divisors (1).

225732961 is an equidigital number, since it uses as much as digits as its factorization.

225732961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 225732961 is about 15024.4121682015. The cubic root of 225732961 is about 608.8799306359.

The spelling of 225732961 in words is "two hundred twenty-five million, seven hundred thirty-two thousand, nine hundred sixty-one".