225434351993 has 2 divisors, whose sum is σ = 225434351994. Its totient is φ = 225434351992.

The previous prime is 225434351977. The next prime is 225434352037. The reversal of 225434351993 is 399153434522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168364964329 + 57069387664 = 410323^2 + 238892^2 .

It is a cyclic number.

It is not a de Polignac number, because 225434351993 - 2⁴ = 225434351977 is a prime.

It is not a weakly prime, because it can be changed into another prime (225434351953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112717175996 + 112717175997.

It is an arithmetic number, because the mean of its divisors is an integer number (112717175997).

Almost surely, 2^225434351993 is an apocalyptic number.

It is an amenable number.

225434351993 is a deficient number, since it is larger than the sum of its proper divisors (1).

225434351993 is an equidigital number, since it uses as much as digits as its factorization.

225434351993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 50.

The spelling of 225434351993 in words is "two hundred twenty-five billion, four hundred thirty-four million, three hundred fifty-one thousand, nine hundred ninety-three".