1325809748 has 12 divisors (see below), whose sum is σ = 2335739700. Its totient is φ = 658455552.

The previous prime is 1325809739. The next prime is 1325809757. The reversal of 1325809748 is 8479085231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1325809739) and next prime (1325809757).

It can be written as a sum of positive squares in 2 ways, for example, as 519931204 + 805878544 = 22802^2 + 28388^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1111661 + ... + 1112852.

It is an arithmetic number, because the mean of its divisors is an integer number (194644975).

Almost surely, 2^1325809748 is an apocalyptic number.

It is an amenable number.

1325809748 is a deficient number, since it is larger than the sum of its proper divisors (1009929952).

1325809748 is a wasteful number, since it uses less digits than its factorization.

1325809748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224666 (or 2224664 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 1325809748 is about 36411.6704917531. The cubic root of 1325809748 is about 1098.5683159397.

The spelling of 1325809748 in words is "one billion, three hundred twenty-five million, eight hundred nine thousand, seven hundred forty-eight".