1326612625 has 16 divisors (see below), whose sum is σ = 1782969552. Its totient is φ = 979651200.

The previous prime is 1326612593. The next prime is 1326612641. The reversal of 1326612625 is 5262166231.

It can be written as a sum of positive squares in 8 ways, for example, as 1113423424 + 213189201 = 33368^2 + 14601^2 .

It is not a de Polignac number, because 1326612625 - 2⁵ = 1326612593 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 406564 + ... + 409813.

It is an arithmetic number, because the mean of its divisors is an integer number (111435597).

Almost surely, 2^1326612625 is an apocalyptic number.

It is an amenable number.

1326612625 is a deficient number, since it is larger than the sum of its proper divisors (456356927).

1326612625 is an equidigital number, since it uses as much as digits as its factorization.

1326612625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816405 (or 816395 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 1326612625 is about 36422.6938185522. The cubic root of 1326612625 is about 1098.7900262952.

Adding to 1326612625 its reverse (5262166231), we get a palindrome (6588778856).

The spelling of 1326612625 in words is "one billion, three hundred twenty-six million, six hundred twelve thousand, six hundred twenty-five".