425120344889 has 2 divisors, whose sum is σ = 425120344890. Its totient is φ = 425120344888.

The previous prime is 425120344871. The next prime is 425120344927. The reversal of 425120344889 is 988443021524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418511955625 + 6608389264 = 646925^2 + 81292^2 .

It is a cyclic number.

It is not a de Polignac number, because 425120344889 - 2¹² = 425120340793 is a prime.

It is not a weakly prime, because it can be changed into another prime (425120344849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212560172444 + 212560172445.

It is an arithmetic number, because the mean of its divisors is an integer number (212560172445).

Almost surely, 2^425120344889 is an apocalyptic number.

It is an amenable number.

425120344889 is a deficient number, since it is larger than the sum of its proper divisors (1).

425120344889 is an equidigital number, since it uses as much as digits as its factorization.

425120344889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2211840, while the sum is 50.

The spelling of 425120344889 in words is "four hundred twenty-five billion, one hundred twenty million, three hundred forty-four thousand, eight hundred eighty-nine".