225552949 has 2 divisors, whose sum is σ = 225552950. Its totient is φ = 225552948.

The previous prime is 225552947. The next prime is 225552961. The reversal of 225552949 is 949255522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212722225 + 12830724 = 14585^2 + 3582^2 .

It is a cyclic number.

It is not a de Polignac number, because 225552949 - 2¹ = 225552947 is a prime.

Together with 225552947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225552941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112776474 + 112776475.

It is an arithmetic number, because the mean of its divisors is an integer number (112776475).

Almost surely, 2^225552949 is an apocalyptic number.

It is an amenable number.

225552949 is a deficient number, since it is larger than the sum of its proper divisors (1).

225552949 is an equidigital number, since it uses as much as digits as its factorization.

225552949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324000, while the sum is 43.

The square root of 225552949 is about 15018.4203230566. The cubic root of 225552949 is about 608.7180360360.

The spelling of 225552949 in words is "two hundred twenty-five million, five hundred fifty-two thousand, nine hundred forty-nine".