Question: How many students attend the university that Edith Humphrey was educated?

Knowledge 1: Edith Humphrey
Edith Ellen Humphrey (11 September 1875 – 25 February 1978) was a British inorganic chemist who carried out pioneering work in co-ordination chemistry at the University of Zurich under Alfred Werner. She is thought to be the first British woman to obtain a doctorate in chemistry. [SEP] Knowledge 2: Switzerland
There are 12 universities in Switzerland, ten of which are maintained at cantonal level and usually offer a range of non-technical subjects. The first university in Switzerland was founded in 1460 in Basel (with a faculty of medicine) and has a tradition of chemical and medical research in Switzerland. The biggest university in Switzerland is the University of Zurich with nearly 25,000 students. The two institutes sponsored by the federal government are the ETHZ in Zürich (founded 1855) and the EPFL in Lausanne (founded 1969 as such, formerly an institute associated with the University of Lausanne) which both have an excellent international reputation.[note 10]
Knowledge 1: Edith Humphrey
Edith Humphrey was the youngest of the seven surviving children of John Charles Humphrey (1833–1903), a clerk at the London Metropolitan Board of Works, and his wife Louisa (née Frost, 1831–1910), a teacher. John Humphrey had started life in poor circumstances, his father having been a bootmaker, and he was a great supporter of education for his daughters as well as his sons. Edith grew up in a middle-class household in Kentish Town, London. Her two elder sisters became teachers, and her brothers, including Herbert Alfred Humphrey (1868–1951), inventor of the Humphrey pump, and William Humphrey (1863–1898), head of the Fourah Bay College in Freetown, Sierra Leone, were educated to degree level. [SEP] Knowledge 2: Brigham Young University
Students attending BYU are required to follow an honor code, which mandates behavior in line with LDS teachings such as academic honesty, adherence to dress and grooming standards, and abstinence from extramarital sex and from the consumption of drugs and alcohol. Many students (88 percent of men, 33 percent of women) either delay enrollment or take a hiatus from their studies to serve as Mormon missionaries. (Men typically serve for two-years, while women serve for 18 months.) An education at BYU is also less expensive than at similar private universities, since "a significant portion" of the cost of operating the university is subsidized by the church's tithing funds.
Knowledge 1: Edith Humphrey
Edith Humphrey was the youngest of the seven surviving children of John Charles Humphrey (1833–1903), a clerk at the London Metropolitan Board of Works, and his wife Louisa (née Frost, 1831–1910), a teacher. John Humphrey had started life in poor circumstances, his father having been a bootmaker, and he was a great supporter of education for his daughters as well as his sons. Edith grew up in a middle-class household in Kentish Town, London. Her two elder sisters became teachers, and her brothers, including Herbert Alfred Humphrey (1868–1951), inventor of the Humphrey pump, and William Humphrey (1863–1898), head of the Fourah Bay College in Freetown, Sierra Leone, were educated to degree level. [SEP] Knowledge 2: William Coperthwaite
William Coperthwaite attended Bowdoin College in Brunswick, Maine, where he majored in art history. His extra-curricular activities included track and pole vaulting, and he served as vice-president of the Outing Club. He later enrolled in the innovative Putney Graduate School of Teacher Education (Antioch University New England) Master's degree program and in 1972 was awarded a Ph.D in education from Harvard University. Coperthwaite's Harvard research examined the process of instructing groups of students on yurt construction. His dissertation was on native Alaskan culture. One of the many yurts he built leading student groups (in 1976 on the new campus of World College West in Marin County, California) became the subject of a student-composed song; "Yurt Fever". Its final verse concluded with "...a person can stray all over the place, but a Yurt is always a round".

Answer: nearly 25,000