425138843 has 6 divisors (see below), whose sum is σ = 436941036. Its totient is φ = 413647272.

The previous prime is 425138821. The next prime is 425138891. The reversal of 425138843 is 348831524.

It is a happy number.

It is not a de Polignac number, because 425138843 - 2¹⁴ = 425122459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425138797 and 425138806.

It is not an unprimeable number, because it can be changed into a prime (425138803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153905 + ... + 156642.

It is an arithmetic number, because the mean of its divisors is an integer number (72823506).

Almost surely, 2^425138843 is an apocalyptic number.

425138843 is a deficient number, since it is larger than the sum of its proper divisors (11802193).

425138843 is an equidigital number, since it uses as much as digits as its factorization.

425138843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310621 (or 310584 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 425138843 is about 20618.8952904854. The cubic root of 425138843 is about 751.9291627056.

The spelling of 425138843 in words is "four hundred twenty-five million, one hundred thirty-eight thousand, eight hundred forty-three".