425898 has 40 divisors (see below), whose sum is σ = 1045440. Its totient is φ = 128520.

The previous prime is 425879. The next prime is 425899. The reversal of 425898 is 898524.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425898.

It is not an unprimeable number, because it can be changed into a prime (425899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1663 + ... + 1901.

It is an arithmetic number, because the mean of its divisors is an integer number (26136).

2⁴²⁵⁸⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522720).

425898 is an abundant number, since it is smaller than the sum of its proper divisors (619542).

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

425898 is a wasteful number, since it uses less digits than its factorization.

425898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 255 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 425898 is about 652.6086116502. The cubic root of 425898 is about 75.2376461951.

It can be divided in two parts, 4258 and 98, that added together give a square (4356 = 66²).

The spelling of 425898 in words is "four hundred twenty-five thousand, eight hundred ninety-eight".