3625605643 has 12 divisors (see below), whose sum is σ = 3987915624. Its totient is φ = 3293734400.

The previous prime is 3625605629. The next prime is 3625605653. The reversal of 3625605643 is 3465065263.

It is not a de Polignac number, because 3625605643 - 2¹⁷ = 3625474571 is a prime.

It is a super-3 number, since 3×3625605643³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3625605596 and 3625605605.

It is not an unprimeable number, because it can be changed into a prime (3625605653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180555 + ... + 199627.

It is an arithmetic number, because the mean of its divisors is an integer number (332326302).

Almost surely, 2^3625605643 is an apocalyptic number.

3625605643 is a deficient number, since it is larger than the sum of its proper divisors (362309981).

3625605643 is a wasteful number, since it uses less digits than its factorization.

3625605643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20666 (or 20655 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 40.

The square root of 3625605643 is about 60213.0022752561. The cubic root of 3625605643 is about 1536.2439587538.

The spelling of 3625605643 in words is "three billion, six hundred twenty-five million, six hundred five thousand, six hundred forty-three".