25600447 has 2 divisors, whose sum is σ = 25600448. Its totient is φ = 25600446.

The previous prime is 25600433. The next prime is 25600457. The reversal of 25600447 is 74400652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25600447 - 2⁷ = 25600319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25600427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12800223 + 12800224.

It is an arithmetic number, because the mean of its divisors is an integer number (12800224).

Almost surely, 2^25600447 is an apocalyptic number.

25600447 is a deficient number, since it is larger than the sum of its proper divisors (1).

25600447 is an equidigital number, since it uses as much as digits as its factorization.

25600447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 25600447 is about 5059.6884291426. The cubic root of 25600447 is about 294.7242352584.

The spelling of 25600447 in words is "twenty-five million, six hundred thousand, four hundred forty-seven".