405320005125 has 96 divisors (see below), whose sum is σ = 861973592064. Its totient is φ = 179311968000.

The previous prime is 405320005087. The next prime is 405320005127. The reversal of 405320005125 is 521500023504.

It is a happy number.

405320005125 is a `hidden beast` number, since 4 + 0 + 532 + 0 + 0 + 0 + 5 + 125 = 666.

It is not a de Polignac number, because 405320005125 - 2¹³ = 405319996933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405320005127) 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, 586024 + ... + 1074273.

It is an arithmetic number, because the mean of its divisors is an integer number (8978891584).

Almost surely, 2^405320005125 is an apocalyptic number.

405320005125 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

405320005125 is an abundant number, since it is smaller than the sum of its proper divisors (456653586939).

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

405320005125 is a wasteful number, since it uses less digits than its factorization.

405320005125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660356 (or 1660343 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 405320005125 its reverse (521500023504), we get a palindrome (926820028629).

The spelling of 405320005125 in words is "four hundred five billion, three hundred twenty million, five thousand, one hundred twenty-five".