1252520505 has 12 divisors (see below), whose sum is σ = 2171035620. Its totient is φ = 668010912.

The previous prime is 1252520491. The next prime is 1252520513. The reversal of 1252520505 is 5050252521.

It can be written as a sum of positive squares in 2 ways, for example, as 262537209 + 989983296 = 16203^2 + 31464^2 .

It is not a de Polignac number, because 1252520505 - 2⁵ = 1252520473 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 13916850 + ... + 13916939.

It is an arithmetic number, because the mean of its divisors is an integer number (180919635).

Almost surely, 2^1252520505 is an apocalyptic number.

1252520505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1252520505 is a deficient number, since it is larger than the sum of its proper divisors (918515115).

1252520505 is a wasteful number, since it uses less digits than its factorization.

1252520505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27833800 (or 27833797 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 1252520505 is about 35390.9664321278. The cubic root of 1252520505 is about 1077.9408940324.

The spelling of 1252520505 in words is "one billion, two hundred fifty-two million, five hundred twenty thousand, five hundred five".