No, it is not possible to produce a sound frequency of 25,000 kHz (kilohertz) using current audio technology. The upper limit of human hearing is generally considered to be around 20,000 Hz (20 kHz). Frequencies above this range are typically referred to as ultrasound and are outside the range of human perception.
Most consumer audio equipment, such as speakers and headphones, are designed to reproduce frequencies within the audible range of human hearing. Therefore, you won't find sound apps or devices capable of producing frequencies higher than 20 kHz for regular listening purposes.
However, specialized equipment and scientific applications can generate and work with ultrasound frequencies for specific purposes such as medical imaging, industrial testing, and scientific research. These applications require specialized equipment and are not typically available in consumer-grade sound apps or devices.