1388325265 has 16 divisors (see below), whose sum is σ = 1737031680. Its totient is φ = 1063903680.

The previous prime is 1388325251. The next prime is 1388325299. The reversal of 1388325265 is 5625238831.

It is not a de Polignac number, because 1388325265 - 2⁵ = 1388325233 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 19281 + ... + 56110.

It is an arithmetic number, because the mean of its divisors is an integer number (108564480).

Almost surely, 2^1388325265 is an apocalyptic number.

It is an amenable number.

1388325265 is a deficient number, since it is larger than the sum of its proper divisors (348706415).

1388325265 is a wasteful number, since it uses less digits than its factorization.

1388325265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75552.

The product of its digits is 345600, while the sum is 43.

The square root of 1388325265 is about 37260.2370497022. The cubic root of 1388325265 is about 1115.5706396892.

The spelling of 1388325265 in words is "one billion, three hundred eighty-eight million, three hundred twenty-five thousand, two hundred sixty-five".