1325655855 has 16 divisors (see below), whose sum is σ = 2356721760. Its totient is φ = 707016384.

The previous prime is 1325655833. The next prime is 1325655857. The reversal of 1325655855 is 5585565231.

It is a happy number.

1325655855 is a `hidden beast` number, since 1 + 3 + 2 + 5 + 65 + 585 + 5 = 666.

It is not a de Polignac number, because 1325655855 - 2⁵ = 1325655823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1325655855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325655857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4909702 + ... + 4909971.

It is an arithmetic number, because the mean of its divisors is an integer number (147295110).

Almost surely, 2^1325655855 is an apocalyptic number.

1325655855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1325655855 is a deficient number, since it is larger than the sum of its proper divisors (1031065905).

1325655855 is an equidigital number, since it uses as much as digits as its factorization.

1325655855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9819687 (or 9819681 counting only the distinct ones).

The product of its digits is 900000, while the sum is 45.

The square root of 1325655855 is about 36409.5571931327. The cubic root of 1325655855 is about 1098.5258089571.

The spelling of 1325655855 in words is "one billion, three hundred twenty-five million, six hundred fifty-five thousand, eight hundred fifty-five".