425438 has 8 divisors (see below), whose sum is σ = 687288. Its totient is φ = 196344.

The previous prime is 425423. The next prime is 425441. The reversal of 425438 is 834524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 16363 = 425438 / (4 + 2 + 5 + 4 + 3 + 8).

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

425438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8156 + ... + 8207.

It is an arithmetic number, because the mean of its divisors is an integer number (85911).

2⁴²⁵⁴³⁸ is an apocalyptic number.

425438 is a deficient number, since it is larger than the sum of its proper divisors (261850).

425438 is a wasteful number, since it uses less digits than its factorization.

425438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16378.

The product of its digits is 3840, while the sum is 26.

The square root of 425438 is about 652.2560846784. The cubic root of 425438 is about 75.2105491086.

The spelling of 425438 in words is "four hundred twenty-five thousand, four hundred thirty-eight".