1285573129 has 2 divisors, whose sum is σ = 1285573130. Its totient is φ = 1285573128.

The previous prime is 1285573111. The next prime is 1285573151. The reversal of 1285573129 is 9213755821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 785961225 + 499611904 = 28035^2 + 22352^2 .

It is an emirp because it is prime and its reverse (9213755821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1285573129 - 2⁵ = 1285573097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1285573169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642786564 + 642786565.

It is an arithmetic number, because the mean of its divisors is an integer number (642786565).

Almost surely, 2^1285573129 is an apocalyptic number.

It is an amenable number.

1285573129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285573129 is an equidigital number, since it uses as much as digits as its factorization.

1285573129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 43.

The square root of 1285573129 is about 35854.8898896650. The cubic root of 1285573129 is about 1087.3405775730.

The spelling of 1285573129 in words is "one billion, two hundred eighty-five million, five hundred seventy-three thousand, one hundred twenty-nine".