505405351250 has 20 divisors (see below), whose sum is σ = 947331792726. Its totient is φ = 202162140000.

The previous prime is 505405351229. The next prime is 505405351271. The reversal of 505405351250 is 52153504505.

It is an interprime number because it is at equal distance from previous prime (505405351229) and next prime (505405351271).

It can be written as a sum of positive squares in 5 ways, for example, as 25057940209 + 480347411041 = 158297^2 + 693071^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 505405351250.

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, 202160891 + ... + 202163390.

Almost surely, 2^505405351250 is an apocalyptic number.

505405351250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505405351250 is a deficient number, since it is larger than the sum of its proper divisors (441926441476).

505405351250 is an equidigital number, since it uses as much as digits as its factorization.

505405351250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404324303 (or 404324288 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 35.

Adding to 505405351250 its reverse (52153504505), we get a palindrome (557558855755).

The spelling of 505405351250 in words is "five hundred five billion, four hundred five million, three hundred fifty-one thousand, two hundred fifty".