425166 has 32 divisors (see below), whose sum is σ = 995328. Its totient is φ = 118560.

The previous prime is 425149. The next prime is 425189. The reversal of 425166 is 661524.

It is a super-2 number, since 2×425166² = 361532255112, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2131 + ... + 2321.

It is an arithmetic number, because the mean of its divisors is an integer number (31104).

2⁴²⁵¹⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (497664).

425166 is an abundant number, since it is smaller than the sum of its proper divisors (570162).

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

425166 is a wasteful number, since it uses less digits than its factorization.

425166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256.

The product of its digits is 1440, while the sum is 24.

The square root of 425166 is about 652.0475442788. The cubic root of 425166 is about 75.1945172930.

The spelling of 425166 in words is "four hundred twenty-five thousand, one hundred sixty-six".