25055647 has 2 divisors, whose sum is σ = 25055648. Its totient is φ = 25055646.

The previous prime is 25055621. The next prime is 25055651. The reversal of 25055647 is 74655052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25055647 - 2¹⁹ = 24531359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25055447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12527823 + 12527824.

It is an arithmetic number, because the mean of its divisors is an integer number (12527824).

Almost surely, 2^25055647 is an apocalyptic number.

25055647 is a deficient number, since it is larger than the sum of its proper divisors (1).

25055647 is an equidigital number, since it uses as much as digits as its factorization.

25055647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 25055647 is about 5005.5616068529. The cubic root of 25055647 is about 292.6185634716.

The spelling of 25055647 in words is "twenty-five million, fifty-five thousand, six hundred forty-seven".