425518 has 8 divisors (see below), whose sum is σ = 642960. Its totient is φ = 211200.

The previous prime is 425501. The next prime is 425519. The reversal of 425518 is 815524.

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

It is a junction number, because it is equal to n+sod(n) for n = 425492 and 425501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425519) by changing a digit.

425518 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, 403 + ... + 1006.

It is an arithmetic number, because the mean of its divisors is an integer number (80370).

2⁴²⁵⁵¹⁸ is an apocalyptic number.

425518 is a deficient number, since it is larger than the sum of its proper divisors (217442).

425518 is a wasteful number, since it uses less digits than its factorization.

425518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562.

The product of its digits is 1600, while the sum is 25.

The square root of 425518 is about 652.3174074023. The cubic root of 425518 is about 75.2152630480.

The spelling of 425518 in words is "four hundred twenty-five thousand, five hundred eighteen".