425240 has 16 divisors (see below), whose sum is σ = 956880. Its totient is φ = 170080.

The previous prime is 425237. The next prime is 425251. The reversal of 425240 is 42524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5276 + ... + 5355.

It is an arithmetic number, because the mean of its divisors is an integer number (59805).

2⁴²⁵²⁴⁰ is an apocalyptic number.

425240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425240 is an abundant number, since it is smaller than the sum of its proper divisors (531640).

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

425240 is a wasteful number, since it uses less digits than its factorization.

425240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10642 (or 10638 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 425240 is about 652.1042861383. The cubic root of 425240 is about 75.1988795668.

Adding to 425240 its reverse (42524), we get a palindrome (467764).

The spelling of 425240 in words is "four hundred twenty-five thousand, two hundred forty".