425403031321 has 2 divisors, whose sum is σ = 425403031322. Its totient is φ = 425403031320.

The previous prime is 425403031309. The next prime is 425403031327. The reversal of 425403031321 is 123130304524.

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., 420370689600 + 5032341721 = 648360^2 + 70939^2 .

It is a cyclic number.

It is not a de Polignac number, because 425403031321 - 2³³ = 416813096729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425403031321.

It is not a weakly prime, because it can be changed into another prime (425403031327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212701515660 + 212701515661.

It is an arithmetic number, because the mean of its divisors is an integer number (212701515661).

Almost surely, 2^425403031321 is an apocalyptic number.

It is an amenable number.

425403031321 is a deficient number, since it is larger than the sum of its proper divisors (1).

425403031321 is an equidigital number, since it uses as much as digits as its factorization.

425403031321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 425403031321 its reverse (123130304524), we get a palindrome (548533335845).

The spelling of 425403031321 in words is "four hundred twenty-five billion, four hundred three million, thirty-one thousand, three hundred twenty-one".