1325773378 has 4 divisors (see below), whose sum is σ = 1988660070. Its totient is φ = 662886688.

The previous prime is 1325773363. The next prime is 1325773387. The reversal of 1325773378 is 8733775231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8733775231 = 373 ⋅23414947.

It can be written as a sum of positive squares in only one way, i.e., 1072104049 + 253669329 = 32743^2 + 15927^2 .

It is an unprimeable number.

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, 331443343 + ... + 331443346.

Almost surely, 2^1325773378 is an apocalyptic number.

1325773378 is a deficient number, since it is larger than the sum of its proper divisors (662886692).

1325773378 is an equidigital number, since it uses as much as digits as its factorization.

1325773378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662886691.

The product of its digits is 740880, while the sum is 46.

The square root of 1325773378 is about 36411.1710605413. The cubic root of 1325773378 is about 1098.5582704323.

The spelling of 1325773378 in words is "one billion, three hundred twenty-five million, seven hundred seventy-three thousand, three hundred seventy-eight".