Pervomaiskyi (Ukrainian: Первомайський) is a city in Kharkiv Oblast (province) of Ukraine also known by its nickname Likhachova. Population is 32,523 (2001) and 41,352 (Current figures by the city administration). This makes Pervomaikyi the fourth largest city in Kharkiv Oblast. The city is also known for its popular Khimprom which was one of the biggest chemical factories in the former USSR.The city is situated about 100 km (62.14 mi) south east from the district center and on the main rail road "Pivdenna Zaliznitsa".Pervomaiski is 4th largest city in the district of Kharkov as some facts confirm that also.The city has lush green plots and parks,a cultural center named "DK Khimik" and a stadium also named "Khimik".