25684047 has 10 divisors (see below), whose sum is σ = 38367648. Its totient is φ = 17122644.

The previous prime is 25684039. The next prime is 25684049. The reversal of 25684047 is 74048652.

It is not a de Polignac number, because 25684047 - 2³ = 25684039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25684049) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 158463 + ... + 158624.

Almost surely, 2^25684047 is an apocalyptic number.

25684047 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

25684047 is a deficient number, since it is larger than the sum of its proper divisors (12683601).

25684047 is an equidigital number, since it uses as much as digits as its factorization.

25684047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317099 (or 317090 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 25684047 is about 5067.9430738713. The cubic root of 25684047 is about 295.0447006858.

The spelling of 25684047 in words is "twenty-five million, six hundred eighty-four thousand, forty-seven".