1325943851 has 2 divisors, whose sum is σ = 1325943852. Its totient is φ = 1325943850.

The previous prime is 1325943833. The next prime is 1325943901. The reversal of 1325943851 is 1583495231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1325943851 - 2²² = 1321749547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1325943799 and 1325943808.

It is not a weakly prime, because it can be changed into another prime (1325948851) 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 as a sum of consecutive naturals, namely, 662971925 + 662971926.

It is an arithmetic number, because the mean of its divisors is an integer number (662971926).

Almost surely, 2^1325943851 is an apocalyptic number.

1325943851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325943851 is an equidigital number, since it uses as much as digits as its factorization.

1325943851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 41.

The square root of 1325943851 is about 36413.5119289530. The cubic root of 1325943851 is about 1098.6053540191.

The spelling of 1325943851 in words is "one billion, three hundred twenty-five million, nine hundred forty-three thousand, eight hundred fifty-one".