250320145 has 4 divisors (see below), whose sum is σ = 300384180. Its totient is φ = 200256112.

The previous prime is 250320143. The next prime is 250320151. The reversal of 250320145 is 541023052.

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 167728401 + 82591744 = 12951^2 + 9088^2 .

It is a cyclic number.

It is not a de Polignac number, because 250320145 - 2¹ = 250320143 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (250320143) 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, 25032010 + ... + 25032019.

It is an arithmetic number, because the mean of its divisors is an integer number (75096045).

Almost surely, 2^250320145 is an apocalyptic number.

It is an amenable number.

250320145 is a deficient number, since it is larger than the sum of its proper divisors (50064035).

250320145 is an equidigital number, since it uses as much as digits as its factorization.

250320145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50064034.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 250320145 is about 15821.5089356230. The cubic root of 250320145 is about 630.2293151939.

Adding to 250320145 its reverse (541023052), we get a palindrome (791343197).

The spelling of 250320145 in words is "two hundred fifty million, three hundred twenty thousand, one hundred forty-five".