250045 has 8 divisors (see below), whose sum is σ = 307296. Its totient is φ = 195216.

The previous prime is 250043. The next prime is 250049. The reversal of 250045 is 540052.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 250045 - 2¹ = 250043 is a prime.

It is a Duffinian number.

250045 is a modest number, since divided by 45 gives 25 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367 + ... + 796.

It is an arithmetic number, because the mean of its divisors is an integer number (38412).

250045 is a Friedman number, since it can be written as 500^2+45, using all its digits and the basic arithmetic operations.

2²⁵⁰⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

250045 is a deficient number, since it is larger than the sum of its proper divisors (57251).

250045 is a wasteful number, since it uses less digits than its factorization.

250045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 250045 is about 500.0449979752. The cubic root of 250045 is about 62.9998320311. Note that the first 3 decimals are identical.

Adding to 250045 its reverse (540052), we get a palindrome (790097).

The spelling of 250045 in words is "two hundred fifty thousand, forty-five".