1252000001 has 16 divisors (see below), whose sum is σ = 1459036800. Its totient is φ = 1052107008.

The previous prime is 1251999967. The next prime is 1252000027. The reversal of 1252000001 is 1000002521.

It is a cyclic number.

It is not a de Polignac number, because 1252000001 - 2¹⁴ = 1251983617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252000091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156761 + ... + 164553.

It is an arithmetic number, because the mean of its divisors is an integer number (91189800).

Almost surely, 2^1252000001 is an apocalyptic number.

It is an amenable number.

1252000001 is a deficient number, since it is larger than the sum of its proper divisors (207036799).

1252000001 is an equidigital number, since it uses as much as digits as its factorization.

1252000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8248.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1252000001 is about 35383.6120400391. The cubic root of 1252000001 is about 1077.7915550838.

Adding to 1252000001 its reverse (1000002521), we get a palindrome (2252002522).

The spelling of 1252000001 in words is "one billion, two hundred fifty-two million, one", and thus it is an aban number.