425945 has 8 divisors (see below), whose sum is σ = 550536. Its totient is φ = 314496.

The previous prime is 425939. The next prime is 425959. The reversal of 425945 is 549524.

It is a happy number.

425945 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 4 ways, for example, as 841 + 425104 = 29^2 + 652^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-425945 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3212 + ... + 3341.

It is an arithmetic number, because the mean of its divisors is an integer number (68817).

2⁴²⁵⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

425945 is a deficient number, since it is larger than the sum of its proper divisors (124591).

425945 is a wasteful number, since it uses less digits than its factorization.

425945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571.

The product of its digits is 7200, while the sum is 29.

The square root of 425945 is about 652.6446199886. The cubic root of 425945 is about 75.2404137117.

The spelling of 425945 in words is "four hundred twenty-five thousand, nine hundred forty-five".