425447 has 4 divisors (see below), whose sum is σ = 464136. Its totient is φ = 386760.

The previous prime is 425443. The next prime is 425471. The reversal of 425447 is 744524.

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

It is not a de Polignac number, because 425447 - 2² = 425443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425447.

It is not an unprimeable number, because it can be changed into a prime (425441) 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, 19328 + ... + 19349.

It is an arithmetic number, because the mean of its divisors is an integer number (116034).

2⁴²⁵⁴⁴⁷ is an apocalyptic number.

425447 is a deficient number, since it is larger than the sum of its proper divisors (38689).

425447 is a wasteful number, since it uses less digits than its factorization.

425447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38688.

The product of its digits is 4480, while the sum is 26.

The square root of 425447 is about 652.2629837726. The cubic root of 425447 is about 75.2110794563.

The spelling of 425447 in words is "four hundred twenty-five thousand, four hundred forty-seven".