421423112665325 has 6 divisors (see below), whose sum is σ = 522564659705034. Its totient is φ = 337138490132240.

The previous prime is 421423112665309. The next prime is 421423112665333. The reversal of 421423112665325 is 523566211324124.

It can be written as a sum of positive squares in 3 ways, for example, as 4158414129961 + 417264698535364 = 2039219^2 + 20427058^2 .

It is not a de Polignac number, because 421423112665325 - 2⁴ = 421423112665309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421423112665325.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8428462253282 + ... + 8428462253331.

It is an arithmetic number, because the mean of its divisors is an integer number (87094109950839).

Almost surely, 2^{421423112665325} is an apocalyptic number.

It is an amenable number.

421423112665325 is a deficient number, since it is larger than the sum of its proper divisors (101141547039709).

421423112665325 is a wasteful number, since it uses less digits than its factorization.

421423112665325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16856924506623 (or 16856924506618 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 47.

Adding to 421423112665325 its reverse (523566211324124), we get a palindrome (944989323989449).

The spelling of 421423112665325 in words is "four hundred twenty-one trillion, four hundred twenty-three billion, one hundred twelve million, six hundred sixty-five thousand, three hundred twenty-five".