421315325 has 6 divisors (see below), whose sum is σ = 522431034. Its totient is φ = 337052240.

The previous prime is 421315319. The next prime is 421315331. The reversal of 421315325 is 523513124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (421315319) and next prime (421315331).

It can be written as a sum of positive squares in 3 ways, for example, as 2785561 + 418529764 = 1669^2 + 20458^2 .

It is not a de Polignac number, because 421315325 - 2¹⁶ = 421249789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 421315294 and 421315303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8426282 + ... + 8426331.

It is an arithmetic number, because the mean of its divisors is an integer number (87071839).

Almost surely, 2^421315325 is an apocalyptic number.

It is an amenable number.

421315325 is a deficient number, since it is larger than the sum of its proper divisors (101115709).

421315325 is a wasteful number, since it uses less digits than its factorization.

421315325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16852623 (or 16852618 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 421315325 is about 20525.9670904930. The cubic root of 421315325 is about 749.6681939687.

Adding to 421315325 its reverse (523513124), we get a palindrome (944828449).

The spelling of 421315325 in words is "four hundred twenty-one million, three hundred fifteen thousand, three hundred twenty-five".