250500505 has 4 divisors (see below), whose sum is σ = 300600612. Its totient is φ = 200400400.

The previous prime is 250500493. The next prime is 250500517. The reversal of 250500505 is 505005052.

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

It is an interprime number because it is at equal distance from previous prime (250500493) and next prime (250500517).

It can be written as a sum of positive squares in 2 ways, for example, as 134119561 + 116380944 = 11581^2 + 10788^2 .

It is not a de Polignac number, because 250500505 - 2⁷ = 250500377 is a prime.

It is a Duffinian number.

It is a zygodrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25050046 + ... + 25050055.

It is an arithmetic number, because the mean of its divisors is an integer number (75150153).

Almost surely, 2^250500505 is an apocalyptic number.

It is an amenable number.

250500505 is a deficient number, since it is larger than the sum of its proper divisors (50100107).

250500505 is an equidigital number, since it uses as much as digits as its factorization.

250500505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50100106.

The product of its (nonzero) digits is 1250, while the sum is 22.

The square root of 250500505 is about 15827.2077448930. The cubic root of 250500505 is about 630.3806425675.

Adding to 250500505 its reverse (505005052), we get a palindrome (755505557).

The spelling of 250500505 in words is "two hundred fifty million, five hundred thousand, five hundred five".