3261255865 has 8 divisors (see below), whose sum is σ = 4472579520. Its totient is φ = 2236289712.

The previous prime is 3261255863. The next prime is 3261255869. The reversal of 3261255865 is 5685521623.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3261255865 - 2¹ = 3261255863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3261255863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46589335 + ... + 46589404.

It is an arithmetic number, because the mean of its divisors is an integer number (559072440).

Almost surely, 2^3261255865 is an apocalyptic number.

3261255865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3261255865 is a deficient number, since it is larger than the sum of its proper divisors (1211323655).

3261255865 is an equidigital number, since it uses as much as digits as its factorization.

3261255865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93178751.

The product of its digits is 432000, while the sum is 43.

The square root of 3261255865 is about 57107.4063935669. The cubic root of 3261255865 is about 1482.9560872356.

The spelling of 3261255865 in words is "three billion, two hundred sixty-one million, two hundred fifty-five thousand, eight hundred sixty-five".