425998 has 4 divisors (see below), whose sum is σ = 639000. Its totient is φ = 212998.

The previous prime is 425989. The next prime is 426007. The reversal of 425998 is 899524.

425998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (425989) and next prime (426007).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106498 + ... + 106501.

It is an arithmetic number, because the mean of its divisors is an integer number (159750).

2⁴²⁵⁹⁹⁸ is an apocalyptic number.

425998 is a deficient number, since it is larger than the sum of its proper divisors (213002).

425998 is a wasteful number, since it uses less digits than its factorization.

425998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213001.

The product of its digits is 25920, while the sum is 37.

The square root of 425998 is about 652.6852227529. The cubic root of 425998 is about 75.2435342840.

The spelling of 425998 in words is "four hundred twenty-five thousand, nine hundred ninety-eight".