425540323121213 has 2 divisors, whose sum is σ = 425540323121214. Its totient is φ = 425540323121212.

The previous prime is 425540323121197. The next prime is 425540323121227. The reversal of 425540323121213 is 312121323045524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354980944719844 + 70559378401369 = 18840938^2 + 8399963^2 .

It is a cyclic number.

It is not a de Polignac number, because 425540323121213 - 2⁴ = 425540323121197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425540323121513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212770161560606 + 212770161560607.

It is an arithmetic number, because the mean of its divisors is an integer number (212770161560607).

Almost surely, 2^{425540323121213} is an apocalyptic number.

It is an amenable number.

425540323121213 is a deficient number, since it is larger than the sum of its proper divisors (1).

425540323121213 is an equidigital number, since it uses as much as digits as its factorization.

425540323121213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 425540323121213 its reverse (312121323045524), we get a palindrome (737661646166737).

The spelling of 425540323121213 in words is "four hundred twenty-five trillion, five hundred forty billion, three hundred twenty-three million, one hundred twenty-one thousand, two hundred thirteen".