225021404441 has 2 divisors, whose sum is σ = 225021404442. Its totient is φ = 225021404440.

The previous prime is 225021404407. The next prime is 225021404449. The reversal of 225021404441 is 144404120522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149920742416 + 75100662025 = 387196^2 + 274045^2 .

It is a cyclic number.

It is not a de Polignac number, because 225021404441 - 2¹⁴ = 225021388057 is a prime.

It is not a weakly prime, because it can be changed into another prime (225021404449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112510702220 + 112510702221.

It is an arithmetic number, because the mean of its divisors is an integer number (112510702221).

Almost surely, 2^225021404441 is an apocalyptic number.

It is an amenable number.

225021404441 is a deficient number, since it is larger than the sum of its proper divisors (1).

225021404441 is an equidigital number, since it uses as much as digits as its factorization.

225021404441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 225021404441 its reverse (144404120522), we get a palindrome (369425524963).

The spelling of 225021404441 in words is "two hundred twenty-five billion, twenty-one million, four hundred four thousand, four hundred forty-one".