425917 has 4 divisors (see below), whose sum is σ = 430236. Its totient is φ = 421600.

The previous prime is 425911. The next prime is 425939. The reversal of 425917 is 719524.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 395641 + 30276 = 629^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 425917 - 2¹¹ = 423869 is a prime.

It is a Duffinian number.

425917 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425911) 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, 2008 + ... + 2209.

It is an arithmetic number, because the mean of its divisors is an integer number (107559).

2⁴²⁵⁹¹⁷ is an apocalyptic number.

It is an amenable number.

425917 is a deficient number, since it is larger than the sum of its proper divisors (4319).

425917 is a wasteful number, since it uses less digits than its factorization.

425917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4318.

The product of its digits is 2520, while the sum is 28.

The square root of 425917 is about 652.6231684517. The cubic root of 425917 is about 75.2387650030.

It can be divided in two parts, 4 and 25917, that added together give a square (25921 = 161²).

The spelling of 425917 in words is "four hundred twenty-five thousand, nine hundred seventeen".