425947 has 4 divisors (see below), whose sum is σ = 427896. Its totient is φ = 424000.

The previous prime is 425939. The next prime is 425959. The reversal of 425947 is 749524.

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

It is a cyclic number.

It is not a de Polignac number, because 425947 - 2³ = 425939 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

425947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (425977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598 + ... + 1099.

It is an arithmetic number, because the mean of its divisors is an integer number (106974).

2⁴²⁵⁹⁴⁷ is an apocalyptic number.

425947 is a deficient number, since it is larger than the sum of its proper divisors (1949).

425947 is a wasteful number, since it uses less digits than its factorization.

425947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948.

The product of its digits is 10080, while the sum is 31.

The square root of 425947 is about 652.6461522142. The cubic root of 425947 is about 75.2405314739.

The spelling of 425947 in words is "four hundred twenty-five thousand, nine hundred forty-seven".