1252570129 has 2 divisors, whose sum is σ = 1252570130. Its totient is φ = 1252570128.

The previous prime is 1252570127. The next prime is 1252570199. The reversal of 1252570129 is 9210752521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1241857600 + 10712529 = 35240^2 + 3273^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252570129 - 2¹ = 1252570127 is a prime.

Together with 1252570127, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1252570094 and 1252570103.

It is not a weakly prime, because it can be changed into another prime (1252570127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626285064 + 626285065.

It is an arithmetic number, because the mean of its divisors is an integer number (626285065).

Almost surely, 2^1252570129 is an apocalyptic number.

It is an amenable number.

1252570129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252570129 is an equidigital number, since it uses as much as digits as its factorization.

1252570129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1252570129 is about 35391.6675080449. The cubic root of 1252570129 is about 1077.9551296031.

The spelling of 1252570129 in words is "one billion, two hundred fifty-two million, five hundred seventy thousand, one hundred twenty-nine".