225965947 has 2 divisors, whose sum is σ = 225965948. Its totient is φ = 225965946.

The previous prime is 225965939. The next prime is 225965959. The reversal of 225965947 is 749569522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225965947 - 2³ = 225965939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225965947.

It is not a weakly prime, because it can be changed into another prime (225905947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112982973 + 112982974.

It is an arithmetic number, because the mean of its divisors is an integer number (112982974).

Almost surely, 2^225965947 is an apocalyptic number.

225965947 is a deficient number, since it is larger than the sum of its proper divisors (1).

225965947 is an equidigital number, since it uses as much as digits as its factorization.

225965947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 49.

The square root of 225965947 is about 15032.1637497734. The cubic root of 225965947 is about 609.0893399023.

The spelling of 225965947 in words is "two hundred twenty-five million, nine hundred sixty-five thousand, nine hundred forty-seven".