1320425757 has 12 divisors (see below), whose sum is σ = 2179750560. Its totient is φ = 754528968.

The previous prime is 1320425753. The next prime is 1320425759. The reversal of 1320425757 is 7575240231.

It is not a de Polignac number, because 1320425757 - 2² = 1320425753 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320425753) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10479507 + ... + 10479632.

It is an arithmetic number, because the mean of its divisors is an integer number (181645880).

Almost surely, 2^1320425757 is an apocalyptic number.

It is an amenable number.

1320425757 is a deficient number, since it is larger than the sum of its proper divisors (859324803).

1320425757 is a wasteful number, since it uses less digits than its factorization.

1320425757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20959152 (or 20959149 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 1320425757 is about 36337.6630646496. The cubic root of 1320425757 is about 1097.0792369391.

Adding to 1320425757 its reverse (7575240231), we get a palindrome (8895665988).

The spelling of 1320425757 in words is "one billion, three hundred twenty million, four hundred twenty-five thousand, seven hundred fifty-seven".