405513125 has 20 divisors (see below), whose sum is σ = 508862112. Its totient is φ = 323046000.

The previous prime is 405513113. The next prime is 405513127. The reversal of 405513125 is 521315504.

It is not a de Polignac number, because 405513125 - 2⁴ = 405513109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405513094 and 405513103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405513127) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 163142 + ... + 165608.

Almost surely, 2^405513125 is an apocalyptic number.

It is an amenable number.

405513125 is a deficient number, since it is larger than the sum of its proper divisors (103348987).

405513125 is an equidigital number, since it uses as much as digits as its factorization.

405513125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 405513125 is about 20137.3564551060. The cubic root of 405513125 is about 740.1759534114.

Adding to 405513125 its reverse (521315504), we get a palindrome (926828629).

The spelling of 405513125 in words is "four hundred five million, five hundred thirteen thousand, one hundred twenty-five".