1255505050 has 24 divisors (see below), whose sum is σ = 2373527772. Its totient is φ = 493968000.

The previous prime is 1255505021. The next prime is 1255505057. The reversal of 1255505050 is 505055521.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 71250481 + 1184254569 = 8441^2 + 34413^2 .

It is not an unprimeable number, because it can be changed into a prime (1255505057) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 202771 + ... + 208870.

Almost surely, 2^1255505050 is an apocalyptic number.

1255505050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255505050 is a deficient number, since it is larger than the sum of its proper divisors (1118022722).

1255505050 is a wasteful number, since it uses less digits than its factorization.

1255505050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411714 (or 411709 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 1255505050 is about 35433.1066941639. The cubic root of 1255505050 is about 1078.7963986332.

The spelling of 1255505050 in words is "one billion, two hundred fifty-five million, five hundred five thousand, fifty".