420325552 has 40 divisors (see below), whose sum is σ = 856373760. Its totient is φ = 199467840.

The previous prime is 420325547. The next prime is 420325553. The reversal of 420325552 is 255523024.

It is a self number, because there is not a number n which added to its sum of digits gives 420325552.

It is not an unprimeable number, because it can be changed into a prime (420325553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43849 + ... + 52567.

It is an arithmetic number, because the mean of its divisors is an integer number (21409344).

Almost surely, 2^420325552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420325552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428186880).

420325552 is an abundant number, since it is smaller than the sum of its proper divisors (436048208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420325552 is a wasteful number, since it uses less digits than its factorization.

420325552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8881 (or 8875 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 420325552 is about 20501.8426488938. The cubic root of 420325552 is about 749.0806821927.

Adding to 420325552 its reverse (255523024), we get a palindrome (675848576).

The spelling of 420325552 in words is "four hundred twenty million, three hundred twenty-five thousand, five hundred fifty-two".