450725 has 18 divisors (see below), whose sum is σ = 618450. Its totient is φ = 325600.

The previous prime is 450719. The next prime is 450727. The reversal of 450725 is 527054.

It can be written as a sum of positive squares in 3 ways, for example, as 484 + 450241 = 22^2 + 671^2 .

It is a de Polignac number, because none of the positive numbers 2^k-450725 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 450725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450727) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2951 + ... + 3099.

2⁴⁵⁰⁷²⁵ is an apocalyptic number.

It is an amenable number.

450725 is a deficient number, since it is larger than the sum of its proper divisors (167725).

450725 is a wasteful number, since it uses less digits than its factorization.

450725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 450725 is about 671.3605588654. The cubic root of 450725 is about 76.6720748128.

Adding to 450725 its reverse (527054), we get a palindrome (977779).

The spelling of 450725 in words is "four hundred fifty thousand, seven hundred twenty-five".