1325966387 has 4 divisors (see below), whose sum is σ = 1327001160. Its totient is φ = 1324931616.

The previous prime is 1325966377. The next prime is 1325966489. The reversal of 1325966387 is 7836695231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325966387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325966377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515462 + ... + 518027.

It is an arithmetic number, because the mean of its divisors is an integer number (331750290).

Almost surely, 2^1325966387 is an apocalyptic number.

1325966387 is a deficient number, since it is larger than the sum of its proper divisors (1034773).

1325966387 is a wasteful number, since it uses less digits than its factorization.

1325966387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034772.

The product of its digits is 1632960, while the sum is 50.

The square root of 1325966387 is about 36413.8213732094. The cubic root of 1325966387 is about 1098.6115780207.

The spelling of 1325966387 in words is "one billion, three hundred twenty-five million, nine hundred sixty-six thousand, three hundred eighty-seven".