25680641 has 8 divisors (see below), whose sum is σ = 29398080. Its totient is φ = 21975408.

The previous prime is 25680607. The next prime is 25680643. The reversal of 25680641 is 14608652.

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

It is not a de Polignac number, because 25680641 - 2¹⁴ = 25664257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25680598 and 25680607.

It is not an unprimeable number, because it can be changed into a prime (25680643) 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, 2030 + ... + 7448.

It is an arithmetic number, because the mean of its divisors is an integer number (3674760).

Almost surely, 2^25680641 is an apocalyptic number.

It is an amenable number.

25680641 is a deficient number, since it is larger than the sum of its proper divisors (3717439).

25680641 is an equidigital number, since it uses as much as digits as its factorization.

25680641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6103.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 25680641 is about 5067.6070289635. The cubic root of 25680641 is about 295.0316580025.

The spelling of 25680641 in words is "twenty-five million, six hundred eighty thousand, six hundred forty-one".