2643825 has 12 divisors (see below), whose sum is σ = 4371248. Its totient is φ = 1410000.

The previous prime is 2643821. The next prime is 2643833. The reversal of 2643825 is 5283462.

2643825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2643825 - 2² = 2643821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2643792 and 2643801.

It is not an unprimeable number, because it can be changed into a prime (2643821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17551 + ... + 17700.

2^2643825 is an apocalyptic number.

2643825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2643825 is a deficient number, since it is larger than the sum of its proper divisors (1727423).

2643825 is a wasteful number, since it uses less digits than its factorization.

2643825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35264 (or 35259 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 2643825 is about 1625.9843172675. The cubic root of 2643825 is about 138.2751807959.

The spelling of 2643825 in words is "two million, six hundred forty-three thousand, eight hundred twenty-five".