225526949 has 2 divisors, whose sum is σ = 225526950. Its totient is φ = 225526948.

The previous prime is 225526919. The next prime is 225526993. The reversal of 225526949 is 949625522.

It is an a-pointer prime, because the next prime (225526993) can be obtained adding 225526949 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200024449 + 25502500 = 14143^2 + 5050^2 .

It is a cyclic number.

It is not a de Polignac number, because 225526949 - 2¹⁶ = 225461413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225526919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112763474 + 112763475.

It is an arithmetic number, because the mean of its divisors is an integer number (112763475).

Almost surely, 2^225526949 is an apocalyptic number.

It is an amenable number.

225526949 is a deficient number, since it is larger than the sum of its proper divisors (1).

225526949 is an equidigital number, since it uses as much as digits as its factorization.

225526949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 44.

The square root of 225526949 is about 15017.5546944235. The cubic root of 225526949 is about 608.6946457010.

The spelling of 225526949 in words is "two hundred twenty-five million, five hundred twenty-six thousand, nine hundred forty-nine".