405125320 has 32 divisors (see below), whose sum is σ = 912124800. Its totient is φ = 161944768.

The previous prime is 405125309. The next prime is 405125323. The reversal of 405125320 is 23521504.

It is a junction number, because it is equal to n+sod(n) for n = 405125291 and 405125300.

It is not an unprimeable number, because it can be changed into a prime (405125323) 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, 95811 + ... + 99949.

It is an arithmetic number, because the mean of its divisors is an integer number (28503900).

Almost surely, 2^405125320 is an apocalyptic number.

405125320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405125320 is an abundant number, since it is smaller than the sum of its proper divisors (506999480).

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

405125320 is a wasteful number, since it uses less digits than its factorization.

405125320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6597 (or 6593 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 405125320 is about 20127.7251571061. The cubic root of 405125320 is about 739.9399269471.

Adding to 405125320 its reverse (23521504), we get a palindrome (428646824).

The spelling of 405125320 in words is "four hundred five million, one hundred twenty-five thousand, three hundred twenty".