402325520 has 40 divisors (see below), whose sum is σ = 939534360. Its totient is φ = 160220160.

The previous prime is 402325507. The next prime is 402325537. The reversal of 402325520 is 25523204.

It can be written as a sum of positive squares in 4 ways, for example, as 181387024 + 220938496 = 13468^2 + 14864^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7340 + ... + 29300.

It is an arithmetic number, because the mean of its divisors is an integer number (23488359).

Almost surely, 2^402325520 is an apocalyptic number.

402325520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402325520 is an abundant number, since it is smaller than the sum of its proper divisors (537208840).

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

402325520 is a wasteful number, since it uses less digits than its factorization.

402325520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22203 (or 22197 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 402325520 is about 20058.0537440700. The cubic root of 402325520 is about 738.2314229805.

Adding to 402325520 its reverse (25523204), we get a palindrome (427848724).

The spelling of 402325520 in words is "four hundred two million, three hundred twenty-five thousand, five hundred twenty".