1252005111 has 12 divisors (see below), whose sum is σ = 2066802192. Its totient is φ = 715431456.

The previous prime is 1252005077. The next prime is 1252005113. The reversal of 1252005111 is 1115002521.

It is not a de Polignac number, because 1252005111 - 2⁶ = 1252005047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252005113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9936486 + ... + 9936611.

It is an arithmetic number, because the mean of its divisors is an integer number (172233516).

Almost surely, 2^1252005111 is an apocalyptic number.

1252005111 is a deficient number, since it is larger than the sum of its proper divisors (814797081).

1252005111 is a wasteful number, since it uses less digits than its factorization.

1252005111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19873110 (or 19873107 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1252005111 is about 35383.6842485347. The cubic root of 1252005111 is about 1077.7930214063.

Adding to 1252005111 its reverse (1115002521), we get a palindrome (2367007632).

The spelling of 1252005111 in words is "one billion, two hundred fifty-two million, five thousand, one hundred eleven".