1325209855 has 16 divisors (see below), whose sum is σ = 1643618304. Its totient is φ = 1024676640.

The previous prime is 1325209849. The next prime is 1325209861. The reversal of 1325209855 is 5589025231.

It is an interprime number because it is at equal distance from previous prime (1325209849) and next prime (1325209861).

It is not a de Polignac number, because 1325209855 - 2⁷ = 1325209727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128812 + ... + 138718.

It is an arithmetic number, because the mean of its divisors is an integer number (102726144).

Almost surely, 2^1325209855 is an apocalyptic number.

1325209855 is a deficient number, since it is larger than the sum of its proper divisors (318408449).

1325209855 is an equidigital number, since it uses as much as digits as its factorization.

1325209855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10806.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 1325209855 is about 36403.4319123898. The cubic root of 1325209855 is about 1098.4026001408.

The spelling of 1325209855 in words is "one billion, three hundred twenty-five million, two hundred nine thousand, eight hundred fifty-five".