1320425775 has 36 divisors (see below), whose sum is σ = 2367908712. Its totient is φ = 703369920.

The previous prime is 1320425773. The next prime is 1320425783. The reversal of 1320425775 is 5775240231.

1320425775 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1320425775 - 2¹ = 1320425773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320425773) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 209977 + ... + 216173.

It is an arithmetic number, because the mean of its divisors is an integer number (65775242).

Almost surely, 2^1320425775 is an apocalyptic number.

1320425775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1320425775 is a deficient number, since it is larger than the sum of its proper divisors (1047482937).

1320425775 is a wasteful number, since it uses less digits than its factorization.

1320425775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7160 (or 7152 counting only the distinct ones).

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

The square root of 1320425775 is about 36337.6633123265. The cubic root of 1320425775 is about 1097.0792419242.

The spelling of 1320425775 in words is "one billion, three hundred twenty million, four hundred twenty-five thousand, seven hundred seventy-five".