1325729929 has 2 divisors, whose sum is σ = 1325729930. Its totient is φ = 1325729928.

The previous prime is 1325729927. The next prime is 1325729953. The reversal of 1325729929 is 9299275231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 803835904 + 521894025 = 28352^2 + 22845^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325729929 - 2¹ = 1325729927 is a prime.

Together with 1325729927, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1325729927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662864964 + 662864965.

It is an arithmetic number, because the mean of its divisors is an integer number (662864965).

Almost surely, 2^1325729929 is an apocalyptic number.

It is an amenable number.

1325729929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325729929 is an equidigital number, since it uses as much as digits as its factorization.

1325729929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 49.

The square root of 1325729929 is about 36410.5744118381. The cubic root of 1325729929 is about 1098.5462694421.

The spelling of 1325729929 in words is "one billion, three hundred twenty-five million, seven hundred twenty-nine thousand, nine hundred twenty-nine".