1252050013 has 4 divisors (see below), whose sum is σ = 1252462108. Its totient is φ = 1251637920.

The previous prime is 1252050001. The next prime is 1252050029. The reversal of 1252050013 is 3100502521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3100502521 = 2819 ⋅1099859.

It can be written as a sum of positive squares in 2 ways, for example, as 807810084 + 444239929 = 28422^2 + 21077^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252050013 - 2⁹ = 1252049501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252050043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201456 + ... + 207577.

It is an arithmetic number, because the mean of its divisors is an integer number (313115527).

Almost surely, 2^1252050013 is an apocalyptic number.

It is an amenable number.

1252050013 is a deficient number, since it is larger than the sum of its proper divisors (412095).

1252050013 is an equidigital number, since it uses as much as digits as its factorization.

1252050013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412094.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1252050013 is about 35384.3187443251. The cubic root of 1252050013 is about 1077.8059059341.

Adding to 1252050013 its reverse (3100502521), we get a palindrome (4352552534).

The spelling of 1252050013 in words is "one billion, two hundred fifty-two million, fifty thousand, thirteen".