505641250 has 20 divisors (see below), whose sum is σ = 947776302. Its totient is φ = 202256000.

The previous prime is 505641247. The next prime is 505641263. The reversal of 505641250 is 52146505.

It can be written as a sum of positive squares in 5 ways, for example, as 43864129 + 461777121 = 6623^2 + 21489^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 201007 + ... + 203506.

Almost surely, 2^505641250 is an apocalyptic number.

505641250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505641250 is a deficient number, since it is larger than the sum of its proper divisors (442135052).

505641250 is an equidigital number, since it uses as much as digits as its factorization.

505641250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404535 (or 404520 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 505641250 is about 22486.4681530915. The cubic root of 505641250 is about 796.6743452242.

Adding to 505641250 its reverse (52146505), we get a palindrome (557787755).

The spelling of 505641250 in words is "five hundred five million, six hundred forty-one thousand, two hundred fifty".