2643633625 has 8 divisors (see below), whose sum is σ = 3299254920. Its totient is φ = 2114906800.

The previous prime is 2643633623. The next prime is 2643633653. The reversal of 2643633625 is 5263363462.

It can be written as a sum of positive squares in 4 ways, for example, as 145733184 + 2497900441 = 12072^2 + 49979^2 .

It is not a de Polignac number, because 2643633625 - 2¹ = 2643633623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2643633623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10574410 + ... + 10574659.

It is an arithmetic number, because the mean of its divisors is an integer number (412406865).

Almost surely, 2^2643633625 is an apocalyptic number.

2643633625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2643633625 is a deficient number, since it is larger than the sum of its proper divisors (655621295).

2643633625 is an equidigital number, since it uses as much as digits as its factorization.

2643633625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21149084 (or 21149074 counting only the distinct ones).

The product of its digits is 466560, while the sum is 40.

The square root of 2643633625 is about 51416.2778213281. The cubic root of 2643633625 is about 1382.7184433563.

The spelling of 2643633625 in words is "two billion, six hundred forty-three million, six hundred thirty-three thousand, six hundred twenty-five".