405125425 has 12 divisors (see below), whose sum is σ = 503093916. Its totient is φ = 323624000.

The previous prime is 405125401. The next prime is 405125431. The reversal of 405125425 is 524521504.

It can be written as a sum of positive squares in 6 ways, for example, as 39589264 + 365536161 = 6292^2 + 19119^2 .

It is not a de Polignac number, because 405125425 - 2⁷ = 405125297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405125393 and 405125402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5967 + ... + 29083.

It is an arithmetic number, because the mean of its divisors is an integer number (41924493).

Almost surely, 2^405125425 is an apocalyptic number.

It is an amenable number.

405125425 is a deficient number, since it is larger than the sum of its proper divisors (97968491).

405125425 is a wasteful number, since it uses less digits than its factorization.

405125425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23828 (or 23823 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 405125425 is about 20127.7277654483. The cubic root of 405125425 is about 739.9399908728.

Adding to 405125425 its reverse (524521504), we get a palindrome (929646929).

The spelling of 405125425 in words is "four hundred five million, one hundred twenty-five thousand, four hundred twenty-five".