225025790449 has 2 divisors, whose sum is σ = 225025790450. Its totient is φ = 225025790448.

The previous prime is 225025790399. The next prime is 225025790453. The reversal of 225025790449 is 944097520522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175555134049 + 49470656400 = 418993^2 + 222420^2 .

It is a cyclic number.

It is not a de Polignac number, because 225025790449 - 2⁷ = 225025790321 is a prime.

It is not a weakly prime, because it can be changed into another prime (225025790489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112512895224 + 112512895225.

It is an arithmetic number, because the mean of its divisors is an integer number (112512895225).

Almost surely, 2^225025790449 is an apocalyptic number.

It is an amenable number.

225025790449 is a deficient number, since it is larger than the sum of its proper divisors (1).

225025790449 is an equidigital number, since it uses as much as digits as its factorization.

225025790449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 225025790449 in words is "two hundred twenty-five billion, twenty-five million, seven hundred ninety thousand, four hundred forty-nine".