25800643 has 8 divisors (see below), whose sum is σ = 28184256. Its totient is φ = 23423400.

The previous prime is 25800637. The next prime is 25800653. The reversal of 25800643 is 34600852.

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

It is a de Polignac number, because none of the positive numbers 2^k-25800643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25800623) 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, 11880 + ... + 13882.

It is an arithmetic number, because the mean of its divisors is an integer number (3523032).

Almost surely, 2^25800643 is an apocalyptic number.

25800643 is a deficient number, since it is larger than the sum of its proper divisors (2383613).

25800643 is a wasteful number, since it uses less digits than its factorization.

25800643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 25800643 is about 5079.4333345364. The cubic root of 25800643 is about 295.4904911131.

The spelling of 25800643 in words is "twenty-five million, eight hundred thousand, six hundred forty-three".