425686 has 4 divisors (see below), whose sum is σ = 638532. Its totient is φ = 212842.

The previous prime is 425681. The next prime is 425701. The reversal of 425686 is 686524.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425681) 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 as a sum of consecutive naturals, namely, 106420 + ... + 106423.

It is an arithmetic number, because the mean of its divisors is an integer number (159633).

2⁴²⁵⁶⁸⁶ is an apocalyptic number.

425686 is a deficient number, since it is larger than the sum of its proper divisors (212846).

425686 is a wasteful number, since it uses less digits than its factorization.

425686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212845.

The product of its digits is 11520, while the sum is 31.

The square root of 425686 is about 652.4461663616. The cubic root of 425686 is about 75.2251603979.

It can be divided in two parts, 425 and 686, that added together give a palindrome (1111).

The spelling of 425686 in words is "four hundred twenty-five thousand, six hundred eighty-six".