225344620849 has 2 divisors, whose sum is σ = 225344620850. Its totient is φ = 225344620848.

The previous prime is 225344620801. The next prime is 225344620871. The reversal of 225344620849 is 948026443522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223675081249 + 1669539600 = 472943^2 + 40860^2 .

It is a cyclic number.

It is not a de Polignac number, because 225344620849 - 2¹⁹ = 225344096561 is a prime.

It is not a weakly prime, because it can be changed into another prime (225344620549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112672310424 + 112672310425.

It is an arithmetic number, because the mean of its divisors is an integer number (112672310425).

Almost surely, 2^225344620849 is an apocalyptic number.

It is an amenable number.

225344620849 is a deficient number, since it is larger than the sum of its proper divisors (1).

225344620849 is an equidigital number, since it uses as much as digits as its factorization.

225344620849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 225344620849 in words is "two hundred twenty-five billion, three hundred forty-four million, six hundred twenty thousand, eight hundred forty-nine".