425009838 has 24 divisors (see below), whose sum is σ = 934320744. Its totient is φ = 128790640.

The previous prime is 425009831. The next prime is 425009839. The reversal of 425009838 is 838900524.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 425009796 and 425009805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425009831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291981 + ... + 293432.

It is an arithmetic number, because the mean of its divisors is an integer number (38930031).

Almost surely, 2^425009838 is an apocalyptic number.

425009838 is an abundant number, since it is smaller than the sum of its proper divisors (509310906).

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

425009838 is a wasteful number, since it uses less digits than its factorization.

425009838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585440 (or 585429 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 425009838 is about 20615.7667332554. The cubic root of 425009838 is about 751.8530993704.

The spelling of 425009838 in words is "four hundred twenty-five million, nine thousand, eight hundred thirty-eight".