425672 has 16 divisors (see below), whose sum is σ = 859740. Its totient is φ = 196416.

The previous prime is 425653. The next prime is 425681. The reversal of 425672 is 276524.

It can be written as a sum of positive squares in 2 ways, for example, as 401956 + 23716 = 634^2 + 154^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

425672 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943 + ... + 2150.

425672 is a Friedman number, since it can be written as 52*(4^7/2-6), using all its digits and the basic arithmetic operations.

2⁴²⁵⁶⁷² is an apocalyptic number.

It is an amenable number.

425672 is an abundant number, since it is smaller than the sum of its proper divisors (434068).

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

425672 is a wasteful number, since it uses less digits than its factorization.

425672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112 (or 4108 counting only the distinct ones).

The product of its digits is 3360, while the sum is 26.

The square root of 425672 is about 652.4354374189. The cubic root of 425672 is about 75.2243357182.

The spelling of 425672 in words is "four hundred twenty-five thousand, six hundred seventy-two".