425685438 has 24 divisors (see below), whose sum is σ = 936087048. Its totient is φ = 139776912.

The previous prime is 425685437. The next prime is 425685499. The reversal of 425685438 is 834586524.

425685438 is a `hidden beast` number, since 4 + 2 + 568 + 54 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 425685393 and 425685402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425685437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175281 + ... + 177692.

It is an arithmetic number, because the mean of its divisors is an integer number (39003627).

Almost surely, 2^425685438 is an apocalyptic number.

425685438 is an abundant number, since it is smaller than the sum of its proper divisors (510401610).

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

425685438 is a wasteful number, since it uses less digits than its factorization.

425685438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353048 (or 353045 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 425685438 is about 20632.1457439598. The cubic root of 425685438 is about 752.2512729321.

The spelling of 425685438 in words is "four hundred twenty-five million, six hundred eighty-five thousand, four hundred thirty-eight".