3265256643 has 16 divisors (see below), whose sum is σ = 4859918976. Its totient is φ = 1932920640.

The previous prime is 3265256633. The next prime is 3265256671. The reversal of 3265256643 is 3466525623.

It is not a de Polignac number, because 3265256643 - 2¹² = 3265252547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3265256595 and 3265256604.

It is not an unprimeable number, because it can be changed into a prime (3265256633) 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, 1149130 + ... + 1151967.

It is an arithmetic number, because the mean of its divisors is an integer number (303744936).

Almost surely, 2^3265256643 is an apocalyptic number.

3265256643 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3265256643 is a deficient number, since it is larger than the sum of its proper divisors (1594662333).

3265256643 is a wasteful number, since it uses less digits than its factorization.

3265256643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301154.

The product of its digits is 777600, while the sum is 42.

The square root of 3265256643 is about 57142.4241960384. The cubic root of 3265256643 is about 1483.5622497972.

The spelling of 3265256643 in words is "three billion, two hundred sixty-five million, two hundred fifty-six thousand, six hundred forty-three".