1325549129 has 2 divisors, whose sum is σ = 1325549130. Its totient is φ = 1325549128.

The previous prime is 1325549107. The next prime is 1325549207. The reversal of 1325549129 is 9219455231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1130304400 + 195244729 = 33620^2 + 13973^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325549129 - 2²⁰ = 1324500553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1325549629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662774564 + 662774565.

It is an arithmetic number, because the mean of its divisors is an integer number (662774565).

Almost surely, 2^1325549129 is an apocalyptic number.

It is an amenable number.

1325549129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325549129 is an equidigital number, since it uses as much as digits as its factorization.

1325549129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The square root of 1325549129 is about 36408.0915319658. The cubic root of 1325549129 is about 1098.4963281001.

The spelling of 1325549129 in words is "one billion, three hundred twenty-five million, five hundred forty-nine thousand, one hundred twenty-nine".