1252201129 has 2 divisors, whose sum is σ = 1252201130. Its totient is φ = 1252201128.

The previous prime is 1252201103. The next prime is 1252201183. The reversal of 1252201129 is 9211022521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 992250000 + 259951129 = 31500^2 + 16123^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252201129 - 2⁷ = 1252201001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1252201189) 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 as a sum of consecutive naturals, namely, 626100564 + 626100565.

It is an arithmetic number, because the mean of its divisors is an integer number (626100565).

Almost surely, 2^1252201129 is an apocalyptic number.

It is an amenable number.

1252201129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252201129 is an equidigital number, since it uses as much as digits as its factorization.

1252201129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1252201129 is about 35386.4540325815. The cubic root of 1252201129 is about 1077.8492660670.

The spelling of 1252201129 in words is "one billion, two hundred fifty-two million, two hundred one thousand, one hundred twenty-nine".