420320505325 has 96 divisors (see below), whose sum is σ = 615709163520. Its totient is φ = 278680953600.

The previous prime is 420320505233. The next prime is 420320505329. The reversal of 420320505325 is 523505023024.

It is a de Polignac number, because none of the positive numbers 2^k-420320505325 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420320505329) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 565706904 + ... + 565707646.

It is an arithmetic number, because the mean of its divisors is an integer number (6413637120).

Almost surely, 2^420320505325 is an apocalyptic number.

It is an amenable number.

420320505325 is a deficient number, since it is larger than the sum of its proper divisors (195388658195).

420320505325 is a wasteful number, since it uses less digits than its factorization.

420320505325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1542 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 31.

Adding to 420320505325 its reverse (523505023024), we get a palindrome (943825528349).

The spelling of 420320505325 in words is "four hundred twenty billion, three hundred twenty million, five hundred five thousand, three hundred twenty-five".